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VOA NEWS
Asteroid's Spin Intrigues Astronomers
Suzanne Presto
February 14, 2013
Astronomers hope to learn more about Asteroid 2012 DA14's features and
composition as it flies past Earth at about 7.8 kilometers per second - far
faster than a speeding bullet...
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VOA NEWS
Asteroid's Spin Intrigues Astronomers
Suzanne Presto
February 14, 2013
Astronomers hope to learn more about Asteroid 2012 DA14's features and
composition as it flies past Earth at about 7.8 kilometers per second - far
faster than a speeding bullet...
|
|
VOA NEWS
Asteroid's Spin Intrigues Astronomers
Suzanne Presto
February 14, 2013
Astronomers hope to learn more about Asteroid 2012 DA14's features and
composition as it flies past Earth at about 7.8 kilometers per second - far
faster than a speeding bullet...
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VOA NEWS
Asteroid's Spin Intrigues Astronomers
Suzanne Presto
February 14, 2013
Astronomers hope to learn more about Asteroid 2012 DA14's features and
composition as it flies past Earth at about 7.8 kilometers per second - far
faster than a speeding bullet...
|
VOA NEWS
Asteroid's Spin Intrigues Astronomers
Suzanne Presto
February 14, 2013
Astronomers hope to learn more about Asteroid 2012 DA14's features and
composition as it flies past Earth at about 7.8 kilometers per second - far
faster than a speeding bullet. But that's not all they...
|
VOA NEWS
Asteroid's Spin Intrigues Astronomers
Suzanne Presto
February 14, 2013
Astronomers hope to learn more about Asteroid 2012 DA14's features and
composition as it flies past Earth at about 7.8 kilometers per second - far
faster than a speeding bullet...
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VOA NEWS
Asteroid's Spin Intrigues Astronomers
Suzanne Presto
February 14, 2013
Astronomers hope to learn more about Asteroid 2012 DA14's features and
composition as it flies past Earth at about 7.8 kilometers per second - far
faster than a speeding bullet. But that's not all they hope to discern when
the object comes within 28,000 kilometers of our planet on February 15.
Spin
Michael Busch is a planetary astronomer at the National Radio Astronomy
Observatory in the southwestern U.S. state of New Mexico. He says the
direction of...
|
VOA NEWS
Asteroid's Spin Intrigues Astronomers
Suzanne Presto
February 14, 2013
Astronomers hope to learn more about Asteroid 2012 DA14's features and
composition as it flies past Earth at about 7.8 kilometers per second - far
faster than a speeding bullet. But that's not all they hope to discern when
the object comes within 28,000 kilometers of our planet on February 15.
Spin
Michael Busch is a planetary astronomer at the National Radio Astronomy
Observatory in the southwestern U.S. state of New Mexico. He says the
direction of DA14's spin is important in predicting the way its orbit
will...
|
VOA NEWS
Asteroid's Spin Intrigues Astronomers
Suzanne Presto
February 14, 2013
Astronomers hope to learn more about Asteroid 2012 DA14's features and
composition as it flies past Earth at
about 7.8 kilometers per second - far faster than a speeding bullet. But
that's not all they hope to discern
when the object comes within 28,000 kilometers of our planet on February 15.
Spin
Michael Busch is a planetary astronomer at the National Radio Astronomy
Observatory in the southwestern U.S.
state of New Mexico. He says the direction of...
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VOA NEWS
Asteroid's Spin Intrigues Astronomers
Suzanne Presto
February 14, 2013
Astronomers hope to learn more about Asteroid 2012 DA14's features and
composition as it flies past Earth at about 7.8 kilometers per second - far
faster than a speeding bullet. B b's not all they hope to discern when the
object comes within 28,000 kilometers of our planet on February 15.
Spin
Michael Busch is a planetary astronomer at the National Radio Astronomy
Observatory in the southwestern U.S. state of New Mexico. He says the
direction of DA14's spin is important in predicting the way its orbit will
change over time.
"One of the interesting things about DA14 is we expect its spin state will
change as it flies by the Earth," said Busch. "T" en otod g ty will pull
slightlXWon one side of the asteroid than on the other, and that will change
its spin."
Speckles
The U.S. space agency's Goldstone antenna in the western state of California
will beam radio waves toward the asteroid. Busch and his team will be about
1,000 kilometers away in New Mexico, where the National Radio Astronomy ...
|
VOA NEWS
Asteroid's Spin Intrigues Astronomers
Suzanne Presto
February 14, 2013
Astronomers hope to learn more about Asteroid 2012 DA14's features and
composition as it flies past Earth at about 7.8 kilometers per second - far
faster than a speeding bullet. But that's not all they hope to discern when
the object comes within 28,000 kilometers of our planet on February 15.
Spin
Michael Busch is a planetary astronomer at the National Radio Astronomy
Observatory in the southwestern U.S. state of New Mexico. He says the
direction of DA14's spin is important in predicting the way its orbit will
change over time.
"One of the interesting things about DA14 is we expect its spin state will
change as it flies by the Earth," said Busch. "The Earth's gravity will pull
slightly more on one side of the asteroid than on the other, and that will
change its spin."
Speckles
The U.S. space agency's Goldstone antenna in the western state of California
will beam radio waves toward the asteroid. Busch and his team will be about
1,000 kilometers away in New Mexico, where the National Radio Astronomy
Observatory operates a pair of antennas, about 400 kilometers apart. The two
antennas will receive the waves reflected off the asteroid's uneven surface.
...
|
VOA NEWS
Asteroid's Spin Intrigues Astronomers
Suzanne Presto
February 14, 2013
Astronomers hope to learn more about Asteroid 2012 DA14's features and
composition as it flies past Earth at
about 7.8 kilometers per second - far faster than a speeding bullet. But
that's not all they hope to discern hen the object comes within 28,000 kilometers of our planet on February 15.
Spin
Michael Busch is a planetary astronomer at the National Radio Astronomy
Observatory in the southwestern U.S.
state of New Mexico. He says the direction of DA14's spin is important in
predicting the way its orbit will
change over time.
"One of the interesting things about DA14 is we expect its spin state will
change as it flies by the Earth,"
said Busch. "The Earth gravoty will pull slightly more on one side of the
asteroid than on the other, and
that will change its spin."
Speckles
The U.S. space agency's Goldstone antenna in the western state of California
will beam radio waves toward the
asteroid. Busch and his team will be about 1,000 kilometers away in New
Mexico, where the National Radio
Astronomy Observatory ...
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VOA NEWS
Asteroid's Spin Intrigues Astronomers
Suzanne Presto
February 14, 2013
Astronomers hope to learn more about Asteroid 2012 DA14's features and
composition as it flies past Earth at about 7.8 kilometers per second - far
faster than a speeding bullet. But that's not all they hope to discern when
the object comes within 28,000 k´ometers oe nr a net m ebo-h C 15.
Spin
Michael Busch is a planetary astronomer at the National Radio Astronomy
Observatory in the southwestern U.S. state of New Mexico. He says the
direction of DA1ss op ieoimportant in predicting the way its orbit will
change over time.
"One of the interesting things about DA14 is we expect its spin state will
change as s = otHL E +ppeehtButtaaan©ae rt 3 o niötKleŠ Yooa o erw oneEide
of the asteroid than on the other, and
that will change its spin."
Speckles
The U.S. space aeeccy's Gol skniiqeSet the western state of California will
beam radio waves toward the asteroid. Busch and his team will be about 1,000
kilometers away in New Mexico, where the National Radio Astronomy
Observatory operates a pair of antennas, about 400 kilometers apart. The two
antennas will receive the waves reflected off the asteroid's uneven surface.
Busch explains parts of the asteroid will reflect the signal differently,
allowing astronomers to observe so-called "speckles."
"That pattern is random, but it moves across the Earth as the asteroid
spins, so by tracking the time difference in when a different speckle
arrives at a given antenna, I can figure out how fast and in what direction
the asteroid is spinning," he said.
Changes in Orbit
Bch also explains that the part of the asteroid that is in view of the sun
de oec a hot spot that radiates heat. This exerts a gentle, jet-like push
that can speed up or slow down the asteroid. Over time, this can
significantly alter its orbit.
Astronomers with NASA, the U.S. space agency, say 2012 DA14's next notable
close approach to our planet will be in 2046, and even then, it won't strike
the Earth.
Busch notes that while scientists can - for the most part - precisely
predict DA14's orbit for the next century, this space rock will yield
important insights into the beha‰cqCeEetlei me`T&e'
"With the radar observations ...
|
VOA NEWS
Asteroid's Spin Intrigues Astronomers
Suzanne Presto
February 14, 2013
Astronomers hope to learn more about Asteroid 2012 DA14's features and
composition as it flies past Earth at about 7.8 kilometers per second - far
faster than a speeding bullet. But that's not all they hope to discern when
the object comes within 28,000 kilometers of our planet on February 15.
Spin
Michael Busch is a planetary astronomer at the Na<tuehiq ÕDj M¡ ry in the
southwestern U.S.
state of New Mexico. He says the direction of DA14's spin is important in
predicti 0®ec P¢u rmiZkne over time.
"One of the interesting things about DA14 is we expect its spin state will
change as it flies by the Earth," said Busch. "The Earth's gravity will pull
slightly more on one side of the asteroid than on the other, and that will
change its spin."
Speckles
The U.S. space agency's Goldstone antenna in the western state of California
will beam radio waves toward the asteroid. Busch and his team will be about
1,000 kilometers away in New Mexico, where the National Radio Astronomy
Observatory operates a pair of antennas, about 400 kilometers apart. The two
antennas will receive the waves reflected off the asteroid's uneven surface.
Busch explains parts of the asteroid will reflect the signal differently,
allowing astronomers to observe
so-called "speckles."
"That pattern is random, but it moves across the Earth as the asteroid
spins, so by tracking the time difference in when a different speckle
arrives at a given antenna, I can figure out how fast and in what direction
the asteroid is spinning," he said.
Changes in Orbit
Busch also explains that the part of the asteroid that is in view of the sun
develops a hot spot that radiates heat. This exerts a gentle, jet-like push
that can speed up or slow down the asteroid. Over time, this can
significantly alter its orbit.
Astronomers with NASA, the U.S. space agency, say 2012 DA14's next notable
close approach to our planet will be in 2046, and even then, it won't strike
the Earth.
Busch notes that while scientists can - for the most part - precisely
predict DA14's orbit for the next century, this space rock will yield
important insights into the behavior of other asteroids.
"With the radar observations that we'll get this weekend after the close
approach and the optical infrared data that is also coming in, we will be
able to much better predict where DA14 in particular is going and run that o
9dcnt ¾oy t ÿ teé= nt08id Busch. "But this also lets us begin to understand
the ... |
VOA NEWS
Asteroid's Spin Intrigues Astronomers
Suzanne Presto
February 14, 2013
Astronomers hope to learn more about Asteroid 2012 DA14's features and
composition as it flies past Earth at about 7.8 kilometers per second - far
faster than a speeding bullet. But that's not all they hope to discern when
the object comes within 28,000 kilometers of ou=n Iaieaeegre3
Spin
Michael Busch is a planetary astronomer at the National Radio Astronomy
Observatory in the southwestern U.S. state of N wtl nico. He says the
direction of DA14's spin is important in predicting the way its orbit will
change over time.
"One of the interesting things about DA14 is we expect its spin state will c
t as it flies by the Earth,"
said Busch. "The Earth e gravity will pull slightly more on one side of the
asteroid than on the other, and that will change its spin."
Speckles
The U.S. space agency's Goldstone antenna in the western state of California
will beam radio waves toward the asteroid. Busch and his team will be about
1,000 kilometers away in New Mexico, where the National Radio Astronomy
Observatory operates a pair of antennas, about 400 kilometers apart. The two
antennas will receive the waves reflected off the asteroid's uneven surface.
Busch explains parts of the asteroid will reflect the signal differently,
allowing astronomers to observe so-called "speckles."
"That pattern is random, but it moves across the Earth as the asteroid
spins, so by tracking the time difference in when a different speckle
arrives at a given antenna, I can figure out how fast and in what direction
the asteroid is spinning," he said.
Changes in Orbit
Busch also explains that the part of the asteroid that is in view of the sun
tevelops a hot spot that radiates heat. This exerts a gentle, jet-like push
that can speed up or slow down the asteroid. Over time, this can
significantly alter its orbit.
Astronomers with NASA, the U.S. space agency, say 2012 DA14's next notable
close approach to our planet will be in 2046, and even then, it won't strike
the Earth.
Busch notes that while scientists can - for the most part - precisely
predict DA14's orbit for the next century, this space rock will yield
important insights into the behavior of othÇ Uterotds... |
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BPSK-500 @
17860000+2600>>
800 WPM
|
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VOA NEWS
Asteroid's Spin Intrigues Astronomers
Suzanne Presto
February 14, 2013
Astronomers hope to learn more about Asteroid 2012 DA14's features and
composition as it flies past Earth at about 7.8 kilometers per second - far
faster than a okeeding bullet. But that's not all they hope to discern when
the object comes within 28,000 kilometers of our planet on February 15.
Spin
Michael Busch is a planetary astronomer at the National Radio Astronomy
Observatory in the southwestern U.S. state of New Mexico. He says the
direction of DA14's spin is important in predicting the way its orbit will
change over time.
"One of the interesting things about DA14 is we expect its spin state will
change as it flies by the Earth,"
said Busch. "The Earth's gravity will pull slightly more on one side of the
asteroL thaen n the oo
r, ao/ that ll chang 1tr f 1o ›ee or heiloo
id he U.iƒ space aœncy's Goldstone antenna in the western state of
California will beam radio waves toward the asteroid. Busch and his team
wiuo be about 1,000 kilometers away in New Mexico, where the National Oadim
maatr,th tnrgatadtoš tsorssc cn L
sT a kilome a e MuFe~ tÕlutRnakill ae eoi a ns tifledted ofn ahe ecteroid's
uneven surface.
Busch explains parts of the asteroid will reflect the signal differently,
allowih astronomers to observe so-called "speckles."
"That pattern is random, but it moves across the Earth as the asteroid
spins, so by tracking the time difference in when a different speckle
arrives at a given antenna, I can figure out how fast and in what direction
the asteroid is spinning," he said.
Changes in Orbit
Busch also explains that the part of the asteroid that is in view of the sun
develops a hot spot that radiates heat. This exerts a gentle, jet-like push
that can smeed up or slow down the asteroid. Over time, this can
significantly alter its orbit.
Astronomers with NASA, the U.S. space agency, say 2012 DA14's next notable
close approach to our planet will be in 2046, and even then, it won't strike
the Earth.
Busch notes that while scientists can - for the most part - precisely
predict DA14's orbit for the next century, this.pace rock will yield impo@ant
insights into the behavior of other asteroids.
"With the radar observations that we'll get this weekend after the close
approach and the optical infrared data that is also coming in, we will be
able to much better predict where DA14 in particular is going and run that
orbit out much further into the future," said Busch. "But this also lets us
begin to understand the properties of the near-Earth asteroids as a
population."
The U.S. space agency says, on average, an asteroid the size of 2012 DA14
gets close every 40 years and hits every 1,$ a0 yärONhttncn}ncnd ewq cjiqe
eieu /asteroid-spin-intrigues-astronomers/1604098.html
VOA News
bruary 13, 23
Astt
mess may hame found the most recent black hole to form in our galaxy, and
they think it could have been
born in a rare explosion caused by a dying star.
New images 3to n o2 ee bao oe e ra X-Ray Observatory, a telescope that
observes the cosmos from an orbit 139,000 kilometers above the Earth,
suggest that the supernova remnant's oddly-shaped clouds of glowing gas may
contain a young black hole.
The remnant, called W49B, is about 1,000 years old. That is equivalent to a
blink of an eye in a universe believed to be nearly 14 billi/ years old.
The Smithsonian Astrophysical Observatory in MassachS eo s operates the
Chandra telescope. ett says, if conf- med S Rosl¾ wii Z be the youngest
black hole in the Milky Way galaxy.
Supernova explosions occur when massive stars run out of fuel, but PASi S e
uch gsdatdIgtsSagr o$t) dg aoe explosions ten` o be symmetrical, but supern
remneo9B is asymmetrical, elongated and elliptical.
Scientists say the distorted shape and the brilliant, colorful X-ray images
of the remnant indicate an unusual 3d for the star.
Astronomers looked for a dense, spinning core, but they saw no evidence of
one. They say this means a black hole may have formed.
Laura Lopez, who led the study at the Massachusetts Institute of Technology,
said W49B is the first of its kind to be discovered in our galaxy. In a
statement on NASA's website, Lopez said, "It appears its parent star ended
its life in a way that most others don't."
NASA launched the Chandra X-ray Observatory in 1999. The findings about W49B
will be published in an upcoming issue of the Astrophysical Journal.
http://www.voanews.com/content/evidence-of-milky-ways-youngest-black-hole/1ae1
t T y i ceyThis is VOA Radiogram r m ºmÐmlmmmmmTmmmo$mm]aoiet>ont |
VOA NEWS
Asteroid's Spin Intrigues Astronomers
Suzanne Presto
February 14, 2013
Astronomers hope to learn more about Asteroid 2012 DA14's features and
composition as it flies past Earth at about 7.8 kilometers per second - far
faster than a speeding bullet. But that's not all they hope to discern when
the object comes within 28,000 kilometers of our planet on February 15.
Spin
Michael Busch is a planetary astronomer at the National Radio Astronomy
Observatory in the southwestern U.S. state of New Mexico. He says the
direction of DA14's spin is important in predicting the way its orbit will
change over time.
"One of the interesting things about DA14 is we expect its spin state will
change as it flies by the Earth," said Busch. "The Earth's gravity will pull
slightly more on one side of the asteroid than on the other, and that will
change its spin."
Speckles
The U.S. space agency's Goldstone antenna in the western state of California
will beam radio waves toward the asteroid. Busch and his team will be about
1,000 kilometers away in New Mexico, where the National Radio Astronomy
Observatory operates a pair of antennas, about 400 kilometers apart. The two
antennas will receive the waves reflected off the asteroid's uneven surface.
Buschem¦lains parts of the asteroid will reflect the signal differently,
allowing astronomers to observe so-called "speckles."
"That pattern is random, but it moves across the Earth as the asteroid
spins, so by tracking the time difference in when a different speckle
arrives at a given antenna, I can figure out how fast and in what direction
the asteroid is spinning," he said.
Changes in Orbit
Busch also explains that the part of the asteroid that is in view of the sun
develops a hot spot that radiates heat. This exerts a gentle, jet-like push
that can speed up or slow down the asteroid. Over time, this can
significantly alter its orbit.
Astronomers with NASA, the U.S. space agency, say 2012 DA14's next notable
close approach to our planet will be in 2046, and even then, it won't strike
the Earth.
Busch notes that while scientists can - for the most part - precisely
predict DA14's orbit for the next century, this space rock will yield
important insights into the behavior of other asteroids.
"With the radar observations that we'll get this weekend after the close
approach and the optical infrared data that is also coming in, we will be
able to much better predict where DA14 in particular is going and run that
orbit out much further into the future," said Busch. "But this also lets us
begin to understand the properties of the near-Earth asteroids as a
population."
The U.S. space agency says, on average, an asteroid the size of 2012 DA14
gets close every 40 years and hits every 1,200 years.
http://www.voanews.com/content/asteroid-spin-intrigues-astronomers/1604098.html
VOA News
February 13, 2013
Astronomers may have found the most recent black hole to form in our galaxy,
and they think it could have been born in a rare explosion caused by a dying
star.
New images from NASA's Chandra X-Ray Observatory, a telescope that observes
the cosmos from an orbit 139,000 kilometers above the Earth, suggest that
the supernova remnant's oddly-shaped clouds of glowing gas may contain a
young black hole.
The remnant, called W49B, is about 1,000 yeae ,ol.nmw2idI8l n8 tf an eye in
a universe believed to be nearly 14 billion years old.
The Smithsonian Astrophysical Observatory in Massachusetts operates the
Chandra telel nbtÊeþeef2e, if confirmed, s nii l be the youngest black hole
in the Milky Way galaxy.
Supernova explosions occur when massive stars run out of fuel, but NASA
notes such blasts are not well understood. The explosions tend to be
symmetrical, but supernova remnant W49B is asymmetrical, elongated and
elliptical.
Scientists say the distorted shape and the brilliant, colorful X-ray images
of the remnant indicate an unusual end for the star.
Astronomers looked for a dense, spinning core, but they saw no evidence of
one. They say this means a black hole may have formed.
Laura Lopez, who led the study at the Massachusetts Institute of Technology,
said W49B is the first of its kind to be discovered in our galaxy. In a
statement on NASA's webs7 Lopez said, "It appeareoare parent star ended its
life in a way that most others don't."
NASA launched the Chandra X-ray Observatory in 1999. The findings about W49B
will be published in an upcoming issue of the Astrophysical Journal.
http://www.voanews.com/content/evidence-of-milky-ways-youngest-black-hole/1603279.html
This is VOA Radiogram from the Voice of America
The website is http://voaradiogram.net
Email to radiogram@voanews.com
VOA Radiogram is an experimental radio program in which text and images are
transmitted by shortwave broadcast.
|
VOA NEWS
Asteroid's Spin Intrigues Astronomers
Suzanne Presto
February 14, 2013
Astronomers hope to learn more about Asteroid 2012 DA14's features and
composition as it flies past Earth at about 7.8 kilemeters per secend - eear
fester th a sue ding bullet. But that's not all they hope to discern when
the object comes within 28,000 kilometers
of our planet on February 15.
Spin
Michael Busch is a planetary astronomer at the National Radio Astronomy
Observatory in the southwestern U.S. state of New Mexico. He says the
direction of DA14's spin is important in predicting the way its orbit will
change over time.
"One of the interesting things about DA14 is we expect its spin state will
change as it flies by the Earth," said Busch. "The Earth's gravity will pull
slightly more on one side of the asteroid than on the other, and that will
change its spin."
Speckles
The U.S. space agency's Goldstone antenna in the western state of California
will beam radio waves toward the asteroid. Busch and his team will be about
1, s0¢kilØ,ers away in New Mexico, where the National Radio Astronomy
Observatory operates a pair of antennasntDh ut 400 kilometers apart. The two
antenna will receive the waves reflected off the asteroid's uneven surface.
Busch explains parts of the asteroid will reflect the signal differently,
allowing astronomers to observe so-called "speckles."
"That pattern is random, but it moves across the Earth as the asteroid
spins, so by tracking the time difference in when a different speckle
arrives at a given antenna, I can figure out how fast and in what direction
the asteroid is spinning," he said.
Changes in Orbit
Busch also explains that the part of the asteroid that is in view of the sun
develops a hot spot that radiates heat. This exerts a gentle, jet-like push
that can speed up or slow down the asteroid. Over time, this can
significantly alter its orbit.
Astronomers with NASA, the U.S. space agency, say 2012 DA14's next notable
close approach to our planet will be in m046, and even then, it won't strike
the Earth.
Busch notes that while scientists can - for the most part - precisely
predict DA14's orbit for the oext ceotury- this space rock hill teal eMport
o tin et e e te iito the betavitr of other asteroids.
"With the radar observations that we'll get this weekend after the close
approach and the optical infrared data that is also coming in, we will be
able to much better predict where DA14 in particular is going and run that
orbit out much further into the future," said
Busch. "But this also lets us begin to understand the properties of the
near-Earth asteroids as a population."
The U.S. space agency says, on average, an asteroid the size of 2012 DA14
gets close every 40 years and hitr every 1,200 years.
rhttp:/Rwww.voanew1ne
*con ent/ast roid-sn-antrigues-astronomers/1604098.html
VOA News
February 13, 2013
Astronomers may have found the most recent black hole to form in our galaxy,
and they think it could have been born in a rare explosion caused by a dying
star.
New images from NASA's Chandra X-Ray Observatory, ae e t noat observes the
cosmos from an orbit 139,000 kilometers above the Earth, suggest that the
supernova remnant's oddly-shaped clouds of glowing gas may contain a young
black hole.
The remnant, called W49B, is about 1,000 years old. That is equivalent to a
blink of an eye in a universe believed to be nearly 14 billion years old.
The Smithsonian Astrophysical Observatory in s a esacduse- a ee-ttea he Chan
a telesnopeaI oeMo, if confirmed, W49B would be the youngest black hole in
the Milky Way galaxy.
Supernova explosions occur when massive stars run out of fuel, but NASA
notes such blasts are not well understood. The ee esions tend to be
symmetrical, but supernova remnant W49B is asymmetrical, elongated and
elliptical.
Scientists say the distorted shape and the brilliant, colorful X-ray images
of the remnant indicate an unusual end for the star.
Astronomers looked for a dense, spinning core, but they saw no evidence of
one. They say this means a black hole may have formed.
Laura Lopez, who led the study at the Massachusetts Institute of Technology,
said W49B is the first of its kind to be discovered in our galaxy. In a
statement on NASA's website, Lopez said, "It appears its parent star ended
its life in a way that most others don't."
NASA launched the Chandra X-ray Observatory in 1999. The findings about W49B
will be published in an upcoming issue of the Astrophysical Journal.
http://www.voanews.com/content/evidence-of-milky-ways-youngest-black-hole/1603279.html
This is VOA Radiogram. |
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VOA NEWS
NASA Captures First Images of ISON Comet
VOA News
February 07, 2013
NASA has captured the first images of a distant comet, which may give us a
spectacular light show later this fall.
The images of comet C/2012 S1 (ISON), were tadinÀ d2ehtڠ=teayycraft from
January 17 and 18 when the comet was 493 million miles away, according to a
NASA release.
"This is the fourth comet on which we have performed science observations
and the farthest point from Earth from which we've tried to transmit data on
a comet," said Tim Larson, project manager for the Deep Impact spacecraft at
NASA's Jet Propulsion Laboratory in
Pasadena, Calif. "The distance limits our bandwidth, so it's a little like
communicating through a modem after being used to DSL. But we're going to
coordinate our science collection and playback so we maximize our return on
this potentially spectacular comet."
As comets approach, the sun's energy warms them, releasing gas and dust
which form a comet's luminous tail. While ISON is still distant, NASA says
it is already active, with a tail extending more than 40,000 miles form the
comet's nucleus. ISON is expected to come as
close as 40 million miles to Earth on December 26 of this year.
ISON is known as a long-period comet. These can have orbits lasting hundred,
thousands or even millions of years. NASA believes this is ISON's first
orbit, which means it is likely "laden with volatile material just spoiling
for some of the sun's energy to heat it up
and help it escape." That could mean quite a show, but NASA cautions the
comet could break up as well.
Would-be comets are thought to dwell in the solar system's Oort cloud,
something NASA calls a "giant spherical cloud of icy bodies surrounding our
solar system so far away its outer edge." When these bodies are disturbed by
the gravitational effects of passing or
nearby stars, they can be "nudged" from the cloud and begin their long
orbits around the Sun.
ISON was discovered on Sept. 21, 2012, by two Russian astronomers using the
bWnÃEe C¥ c Optical Network's 16-inch (40-centimeter) telescope near
Kislovodsk.
http://www.voanews.com/content/nasa-captures-first-images-ison-comet/1599119.html
VOA Radiogram
http://voaradiogram.net
radiogram@voanews.com
VOA NEWS
Study: Earth-Like Planets Closer Than Expected
VOA News
February 06, 2013
Astronomers say there could be as many as 4.5 billion Earth-like planets
orbiting stars in the Milky Way galaxy, and the nearest of them could be
practically next door, in cosmic terms.
Scientists at the Harvard-Smithsonian Center for Astrophysics, after
analyzing data from NASA's Kepler space telescope, calculated that six
percent of the galaxy's 75 billion red dwarf stars have potentially
habitable, Earth-sized planets. Red dwarfs -- which are
smaller, cooler and much dimmer than our own Sun - are the most common stars
in the galaxy, so the closest Earth-like planet could be just 13 light years
away, the astronomers conclude in their new study.
"We thought we would have to search vast distances to find an Earth-like
planet," said Harvard astronomer and lead author Courtney Dressing at a
Cambridge, Massachusetts, news briefing. "Now we realize another Earth is
probably in our own backyard, waitinlrgr 0oa"
Wor!e Viaizofr's 158,000-star catalog, Dressing culled all the red dwarfs
and profiled their sizes and temperatures, as well as the number of planet
candidates in orbit around them. She narrowed this planet list down to those
of just the right size, temperature and
distance from their host star to harbor liquid water and, possibly, life as
we know it.
Dressing's analysis found just three planetary candidates that were both
warm and approximately Earth-sized. Statistically, that meant that six
percent of all red dwarf stars throughout the galaxy should have an
Earth-like planet.
"We now know the rate of occurrence of habitable planets around the most
common stars in our galaxy," co-author David Charbonneau, also with the
Center for Astrophysics, told reporters. "That rate implies that it will be
significantly easier to search for life beyond
the solar system than we previously thought."
Our sun is surrounded by a swarm of red dwarf stars. In fact, about 75
percent of the closest stars are red dwarfs. They are good places to look
for Earth-like planets not only because they are so numerous. Their smaller
size also makes it easier for astronomers to
spot a relatively large Earth-size planet as it transits across the star's
disk.
The Harvard astronomers say locating nearby, Earth-like worlds will require
a dedicated small space telescope, or a large network of ground-based
telescopes. And they are hopeful that follow-up studies çm h QpMv nee
eh be-operational Giant Magellan Telescope in Chile and the James Webb Space
Telescope -- due to be launched in 2018 - could eventually tell us whether
any warm, transiting planets have an atmosphere and life-friendly chemistry.
Since red dwarf stars last much longer than Sun-like stars, the astronomers
say their analysis raises the possibility that life on one of their
Earth-like planets would be much older and more evolved than life on Earth.
The results of the study are published in The Astrophy qhnÀÆo3bdttnogdLh
voanews.com/content/science-earthlike-planets-nearby/1598607.html
VOA Radiogram
http://voaradiogram.net
radiogram@voanews.com
VOA NEWS
NASA Telescope Spots Solar Braids
Suzanne Presto
January 24, 2013
Five or 10 minutes is not a long time when it comes to a NASA mission, but
it was long enough for NASA's High Resolution Coronal Imager, or Hi-C,
telescope to capture the sharpest images ever taken of the sun's scorching
atmosphere.
The sun's surface is about 5,000 degrees Celsius, but its atmosphere can be
millions of degrees hotter. Scientists, including Hi-C mission principal
investigator Jonathan Cirtain, are working to figure out what energy source
is heating the solar atmosphere.
"This high temperature atmosphere is where space weather is initiated and
where energetic events like flares and coronal mass ejections can
originate," Cirtain told reporters during a NASA teleconference. "So
understanding the energy supply for the corona has
implications across the stellar structure and heliophysics, in general."
NASA launched a suborbital rocket carrying the telescope last July. Hi-C
snapped 165 images of an active region in the sun's corona, and the
telescope could see features in the solar atmosphere that were only
150-kilometers across.
NASA says that is the equivalent of spotting a coin from six kilometers
away.
The new images show magnetic loops that twist around each other to resemble
braids, and when the braids unravel, there are simultaneous increases in
energy emission. This supports a theory developed 30 years ago that the
magnetic field could be supplying the energy
that fuels solar flares and coronal mass ejections.
An astrophysicist at the Lockheed Martin Advanced Technology Center in
California, Karel Schrijver, said solar storms have an effect in space and
on Earth.
"Our society is increasingly dependent on space technology for navigation
and communication, and we can't even imagine living without electricity,"
said Schrijver. "Yet, the largest of these solar storms could cause enormous
problems and may damage large parts of the
power grid or disable the navigation systems."
NASA astrophysicist Cirtain, who is based at the Marshall Space Flight
Center in Alabama, says he would like to see a satellite version of the Hi-C
telescope. He says scientists' ability to forecast space weather could
mitigate solar storms' economic and societal
impacts.
The Hi-C findings are published in the journal Nature.
http://www.voanews.com/content/nasa-telescope-spots-solar-braids/1590296.html
VOA Radiogram
http://voaradiogram.net
radiogram@voanews.com
VOA NEWS
New Evidence of Ancient Lake on Mars
VOA News
January 20, 2013
A NASA orbiter flying around Mars is showing evidence of an ancient
underground-fed lake at the bottom of a crater, another sign that the planet
may have once had life.
The Reconnaissance Orbiter spotted carbonate and clay materials inside what
scientists have named McLaughlin's Crater, a pit 92 kilometers wide and more
than 2 kilometers deep.
Such materials can only be formed when water is present.
The scientists say the lack of channels inside the crater means the lake was
likely fed from underground.
NASA scientist Rick Zurek says the latest findings reveal a more complex
Mars than previously thought, with some areas of the planet likely to show
signs of ancient life more than others.
http://www.voanews.com/content/new-evidence-of-ancient-lake-on-mars/1587608.html
VOA Radiogram
http://voaradiogram.net
radiogram@voanews.com
VOA NEWS
Scientists Find Milky Way's Spine
Rosanne Skirble
January 12, 2013
Scientists have announced the discovery of a spine-like structure within the
Milky Way that might help explain the dynamics of galactic formation.
The Milky Way is the spiral galaxy we live in and is one of billions of such
vast pinwheel-like formations scattered throughout the universe, each
containing hundreds of billions of stars.
Harvard University astronomy professor Alyssa Goodman is an expert on star
formation. Not long ago, she and her colleagues at the Harvard Smithsonian
Center for Astrophysics were reviewing data of a dense cosmic cloud
nicknamed Nessie by the scientist who first
described it.
Goodman's team saw a new feature in the cloud, a tendril of dust and gas
about 1,000 light years long, that made Nessie eight times longer than it
was previously thought to be.
Since we live inside the Milky Way, it can be difficult for us to determine
its exact structure. Goodman says this is the first time that scientists
have seen such a delicate piece of the galactic skeleton.
"What we've added to this is the idea that there might be these very sharp,
dense features that we can pick out of the data and that that will just add
another tool to the arsenal of trying to figure out the structure of the
galaxy we live in."
Computer simulations of galaxy formation show webs of filaments within
spiral disks. It is very likely that the newly discovered Milky Way feature
is one of these skeletal filaments.
"If we combine this information in a statistical way, we can probably build
a pretty good three-dimentional model of the galaxy," Goodman says. The new
filament is likely made from high density gas, the type that forms stars.
The discovery is an interesting demonstration of what's called open science.
Goodman and nine collaborators are writing the paper on the find, which the
public can review as it evolves online at authorea.com.
"That means that as we work on the paper, which is about 90 percent done at
this point, the whole world can see it. They can watch us work on it."
Goodman presented her work at the American Astronomical Society meeting in
Long Beach, California.
http://www.voanews.com/content/scientists-find-milky-way-spine/1582519.html
VOA Radiogram
http://voaradiogram.net
radiogram@voanews.com
... start
[WRAP:beg][WRAP:lf][WRAP:fn VOAR1A_Flmsg.b2s]<flmsg>1.1.29
:hdr_fm:19
VOA 20130503181703
:hdr_ed:19
VOA 20130503181703
<blankform>
:mg:3167 <h1 style="color:#0000FF;font-style:italic">VOA News</h1>
<h2 style="color:#FF0000">Science & Technology</h2>
<h1>NASA Satellite System To Get Upgrade</h1>
<h3 style="color:#606060">Suzanne Presto<br>January 29, 2013</h3>
<p>If you've ever marveled at the Hubble Space Telescope's colorful images
of the cosmos or watched video of astronauts in near-real time as they float
through their lab on the ISS, you have a fleet of satellites to thank.
<p><b>Space Network</b>
<p>The satellites comprise NASA's so-called 'Space Network,' formally known
as the <a href="https://www.spacecomm.nasa.gov/spacecomm//programs/tdrss/default.cfm">Tracking
and Data Relay Satellite System</a>, or TDRS.
<p>Badri Younes, NASA's deputy associate administrator of Space
Communications and Navigation, or SCaN, says science as we know it - and
NASA as we know it - would not exist without such satellites.
<p>"All of the beautiful images, whether you are looking deep into
space trying to discover the origin of the universe, looking at the galaxies
or looking at Earth trying to see the trend in the weather and the changes
that are taking place," come from
voice, video and data that people receive through SCaN, Younes told
reporters at a pre-launch briefing.
<p>The Space Network is an aging fleet that orbits the Earth, and it's about
to get an upgrade with its first new spacecraft since 2002.
<p><b>Upgrade</b>
<p>The U.S. space agency is preparing to launch the first of a new
generation of communications satellites to link control centers here on
Earth with NASA spacecraft, including the International Space Station. The
satellite, called TDRS-K, is scheduled to launch
aboard an Atlas V rocket from Cape Canaveral in Florida Wednesday night.
<p>It will join seven surviving satellites in the TDRS set. Two have been
retired, boosted about 400 kilometers higher into so-called "disposal
orbit." One is in storage in orbit. Two more will follow TDRS-K.
<p>The new satellite was designed for a lifespan of 15 years, but it could
last much longer.
<p><b>Legacies and the Future</b>
<p>NASA says the first of these satellites, launched 30 years ago, was used
to support the first telemedicine surgery at the South Pole. That was when
doctors in the northeastern U.S. state of Massachusetts were able to assist
a physician in repairing the knee of a
meteorologist in Antarctica back in 2002.
<p>"Launch is just the beginning of this satellite's journey and the
addition of TDRS-K to the overall constellation will continue the successful
legacy of the project and strengthen NASA's communication system that is so
vital for the International Space
Station and many other satellites that are in orbit today and will be in
orbit iclˆuture," said Vernon Thorp, who handles NASA missions at
rocket-supplier United Launch Alliance.
<p>Thorp added that the TDRS constellation even helps scientists improve
upon the very rockets that launch these satellites into orbit.
<p><a href="http://www.voanews.com/content/nasa-satellite-system-to-get-upgrade/1593381.html">www.voanews.com/co
ntent/nasa-satellite-system-to-get-upgrade/1593381.html</a>
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A0F0 in file
1FDE computed
File contents:
[WRAP:fn VOAR1A_Flmsg.b2s]1.1.29
:hdr_fm:19
VOA 20130503181703
:hdr_ed:19
VOA 20130503181703
:mg:3167
VOA News
Science &
Technology
NASA Satellite System To Get
Upgrade
Suzanne Presto
January 29, 2013
If you've ever marveled at the
Hubble Space Telescope's colorful images of the cosmos or watched video of
astronauts in near-real time as they float through their lab on the ISS, you
have a fleet of satellites to thank.
Space Network
The satellites comprise NASA's
so-called 'Space Network,' formally known as the
Tracking and Data Relay Satellite System, or TDRS.
Badri Younes, NASA's deputy
associate administrator of Space Communications and Navigation, or SCaN,
says science as we know it - and NASA as we know it - would not exist
without such satellites.
"All of the beautiful images,
whether you are looking deep into space trying to discover the origin of the
universe, looking at the galaxies or looking at Earth trying to see the
trend in the weather and the changes that are taking place," come from
voice, video and data that people receive through SCaN, Younes told
reporters at a pre-launch briefing.
The Space Network is an aging
fleet that orbits the Earth, and it's about to get an upgrade with its first
new spacecraft since 2002.
Upgrade
The U.S. space agency is
preparing to launch the first of a new generation of communications
satellites to link control centers here on Earth with NASA spacecraft,
including the International Space Station. The satellite, called TDRS-K, is
scheduled to launch aboard an Atlas V rocket from Cape Canaveral in Florida
Wednesday night.
It will join seven surviving
satellites in the TDRS set. Two have been retired, boosted about 400
kilometers higher into so-called "disposal orbit." One is in storage in
orbit. Two more will follow TDRS-K.
The new satellite was designed
for a lifespan of 15 years, but it could last much longer.
Legacies and the Future
NASA says the first of these
satellites, launched 30 years ago, was used to support the first
telemedicine surgery at the South Pole. That was when doctors in the
northeastern U.S. state of Massachusetts were able to assist a physician in
repairing the knee of a meteorologist in Antarctica back in 2002.
"Launch is just the beginning of
this satellite's journey and the addition of TDRS-K to the overall
constellation will continue the successful legacy of the project and
strengthen NASA's communication system that is so vital for the
International Space Station and many other satellites that are in orbit
today and will be in orbit ic l�uture,"
said Vernon Thorp, who handles NASA missions at rocket-supplier United
Launch Alliance.
Thorp added that the TDRS
constellation even helps scientists improve upon the very rockets that
launch these satellites into orbit.
www.voanews.com/co ntent/nasa-satellite-system-to-get-upgrade/1593381.html
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VOA NEWS
NASA Captures First Images of ISON Comet
VOA News
February 07, 2013
NASA has captured the first images of a distant comet, which may give us a
spectacular light show later this fall.
The images of comet C/2012 S1 (ISON), were taken by NASA's Deep Impact
spacecraft from January 17 and 18 when the comet was 493 million miles away,
according to a NASA release.
"This is the fourth comet on which we have performed science observations
and the farthest point from Earth from which we've tried to transmit data on
a comet," said Tim Larson, project manager for the Deep Impact spacecraft at
NASA's Jet Propulsion Laboratory in
Pasadena, Calif. "The distance limits our bandwidth, so it's a little like
communicating through a modem after being used to DSL. But we're going to
coordinate our science collection and playback so we maximize our return on
this potentially spectacular comet."
As comets approach, the sun's energy warms them, releasing gas and dust
which form a comet's luminous tail. While ISON is still distant, NASA says
it is already active, with a tail extending more than 40,000 miles form the
comet's nucleus. ISON is expected to come as
close as 40 million miles to Earth on December 26 of this year.
ISON is known as a long-period comet. These can have orbits lasting hundred,
thousands or even millions of years. NASA believes this is ISON's first
orbit, which means it is likely "laden with volatile material just spoiling
for some of the sun's energy to heat it up
and help it escape." That could mean quite a show, but NASA cautions the
comet could break up as well.
|
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110 WPM
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VOA NEWS
NASA Captures First Images of ISON Comet u&s5re dNzews
February 07, 2013
NASA has captured the first images of a distant comet, which may give us a
spectacular light show later this fall.
The images of comet C/2012 S1 (ISON), were taken by NASA's Deep Impact
spacecraft from January 17 and 18 when the comet was 493 million miles away,
according to a NASA release.
"This is the fourth comet on which we have performed science observations
and the farthest point from Earth from which we've tried to transmit data on
a comet," said Tim Larson, project manager for the Deep Impact spacecraft at
NASA's Jet Propulsion Laboratory in
Pasadena, Calif. "The distance limits our bandwidth, so it's a little like
communicating through a modem after being used to DSL. But we're going to
coordinate our science collection EeRplayback so we maximize our return on
this potentially spectacular comet."
As comets approach, the sun's energy warms them, releasing gas and dust
which form a comet's luminous tail. While ISON is still distant, NASA says
it is already active, with a tail extending more than 40,000 miles form the
comet's nucleus. ISON is expected to come as
close as 40 million miles to Earth on December 26 of this year.
ISON is known as a long-period comet. These can have orbits lasting hundred,
thousands or even millions of years. NASA believes this is ISON's first
orbit, which means it is likely "laden with volatile material just spoiling
for some of the sun's energy to heat it up
and help it escape." That could mean quite a show, but NASA cautions the
comet could break up as well.
Would-be comets are thought to dwell in the solar system's Oort cloud,
something NASA calls a "giant spherical cloud of icy bodies surrounding our
solar system so far away its outer edge." When these bodies are disturbed by
the gravitational effects of passing or
nearby stars, they can be "nudged" from the cloud and begin their long
orbits around the Sun.
ISON was discovered on Sept. 21, 2012, by two Russian astronomers using the
International Scientific Optical Network's 16-inch (40-centimeter) telescope
near Kislovodsk.
http://www.voanews.com/content/nasa-captures-first-images-ison-comet/1599119.html
VOA Radiogram
http://voaradiogram.net
radiogram@voanews.com
VOA NEWS
New Evidence of Ancient Lake on Mars
VOA News
January 20, 2013
A NASA orbiter flying around Mars is showing evidence of an ancient
underground-fed lake at the bottom of a crater, another sign that the planet
may have once had life.
The Reconnaissance Orbiter spotted carbonate and clay materials inside what
scientists have named McLaughlin's Crater, a pit 92 kilometers wide and more
than 2 kilometers deep.
Such materials can only be formed when water is present.
The scientists say the lack of channels inside the crater means the lake was
likely fed from underground.
NASA scientist Rick Zurek says the latest findings reveal a more complex
Mars than previously thought, with some areas of the planet likely to show
signs of ancient life more than others.
http://www.voanews.com/content/new-evidence-of-ancient-lake-on-mars/1587608.html
VOA Radiogram
http://voaradiogram.net
radiogram@voanews.com
|
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PSK-250Robust @
17860000+2500>>
220 WPM
|
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VOA NEWS
NASA Captures First Images of ISON Comet
VOA News
February 07, 2013
NASA has captured the first
imhlzph
1?oPixet, which may give us a spectacular light show later this
fall.
The images of comet C/2012 S1 (ISON), were taken by NASA's Deep Impact
spacecraft from January 17 and 18 when
the comet was 493 million miles away, according to a NASA release.
"This is the fourth comet on which we have performed science observations
and the farthest point from Earth from which we've tried to transmit data on
a comet," said Tim Larson, project manager for the Deep Impact spacecraft at
NASA's Jet Propulsion Laboratory in
Pasadena, Calif. "The distance limits our bandwidth, so it's a little like
communicating through a modem after being used to DSL. But we're going to
coordinate our science collection and playback so we maximize our return on
this potentially spectacular comet."
As comets approach, the sun's energy warms them, releasing gas and dust
which form a comeV! D<i½3e. While ISON is still distant, NASA says it is
already active, with a tail extending more than 40,000 miles form the
comet's nucleus. ISON is expected to come as close
as 40 million miles to Earth on December 26 of this year.
ISON is known as a long-period comet. These can have orbits lasting hundred,
thousands or even millions of years. NASA believes this is ISON's first
orbit, which means it is likely "laden with volatile material just spoiling
for some of the sun's energy to heat it up
and help it escape." That could mean quite a show, but NASA cautions the
comet could break up as well.
Would-be comets are thought to dwell in the solar system's Oort cloud,
something NASA calls a "giant spherical cloud of icy bodies surrounding our
solar system so far away its outer edge." When these bodies are disturbed by
the gravitational effects of passing or
nearby stars, they can be "nudged" from the cloud and begin their long
orbits around the Sun.
ISON was discovered on Sept. 21, 2012, by two Russian astronomers using the
International Scientific Optical Network's 16-inch (40-centimeter) telescope
near Kislovodsk.
http://www.voanews.com/content/nasa-captures-first-images-ison-comet/1599119.html
VOA Radiogram
http://voaradiogram.net
radiogram@voanews.com
VOA NEWS
New Evidence of Ancient Lake on Mars
VOA News
January 20, 2013
A NASA orbiter flying around Mars is showing evidence of an ancient
underground-fed lake at the bottom of a crater, another sign that the planet
may have once had life.
The Reconnaissance Orbiter spotted carbonate and clay materials inside what
scientists have named McLaughlin's Crater, a pit 92 kilometers wide and more
than 2 kilometers deep.
Such materials can only be formed when water is present.
The scientists say the lack of channels inside the crater means the lake was
likely fed from underground.
NASA scientist Rick Zurek says the latest findings reveal a more complex
Mars than previously thought, with some areas of the planet likely to show
signs of ancient life more than others.
http://www.voanews.com/content/new-evidence-of-ancient-lake-on-mars/1587608.html
VOA Radiogram
http://voaradiogram.net
radiogram@voanews.com
iil tftR ob... start
[WRAP:beg][WRAP:lf][WRAP:fn VOAR1A_Flmsg.b2s]<flmsg>1.1.29
:hdr_fm:19
VOA 20130503181849
:hdr_ed:19
VOA 20130503181703
<blankform>
:mg:3167 <h1 style="color:#0000FF;font-style:italic">VOA News</h1>
<h2 style="color:#FF0000">Science & Technology</h2>
<h1>NASA Satellite System To Get Upgrade</h1>
<h3 style="color:#606060">Suzanne Presto<br>January 29, 2013</h3>
<p>If you've ever marveled at the Hubble Space Telescope's colorful images
of the cosmos or watched video of astronauts in near-real time as they float
through their lab on the ISS, you have a fleet of satellites to thank.
<p><b>Space Network</b>
<p>The satellites comprise NASA's so-called 'Space Network,' formally known
as the <a href="https://www.spacecomm.nasa.gov/spacecomm//programs/tdrss/default.cfm">Tracking
and Data Relay Satellite System</a>, or TDRS.
<p>Badri Younes, NASA's deputy associate administrator of Space
Communications and Navigation, or SCaN, says science as we know it - and
NASA as we know it - would not exist without such satellites.
<p>"All of the beautiful images, whether you are looking deep into
space trying to discover the origin of the universe, looking at the galaxies
or looking at Earth trying to see the trend in the weather and the changes
that are taking place," come from
voice, video and data that people receive through SCaN, Younes told
reporters at a pre-launch briefing.
<p>The Space Network is an aging fleet that orbits the Earth, and it's about
to get an upgrade with its first new spacecraft since 2002.
<p><b>Upgrade</b>
<p>The U.S. space agency is preparing to launch the first of a new
generation of communications satellites to link control centers here on
Earth with NASA spacecraft, including the International Space Station. The
satellite, called TDRS-K, is scheduled to launch
aboard an Atlas V rocket from Cape Canaveral in Florida Wednesday night.
<p>It will join seven surviving satellites in the TDRS set. Two have been
retired, boosted about 400 kilometers higher into so-called "disposal
orbit." One is in storage in orbit. Two more will follow TDRS-K.
<p>The new satellite was designed for a lifespan of 15 years, but it could
last much longer.
<p><b>Legacies and the Future</b>
<p>NASA says the first of these satellites, launched 30 years ago, was used
to support the first telemedicine surgery at the South Pole. That was when
doctors in the northeastern U.S. state of Massachusetts were able to assist
a physician in repairing the knee of a
meteorologist in Antarctica back in 2002.
<p>"Launch is just the beginning of this satellite's journey and the
addition of TDRS-K to the es Jf ntion will continue the successful legacy of
the project and strengthen NASA's communication system that is so vital for
the International Space Station and many
other satellites that are in orbit today and will be in orbit in
tsioþmKtzÝosaid Vernon Thorp, who handles NASA missions at rocket-supplier
United Launch Alliance.
<p>Thorp added that the TDRS constellation even helps scientists improve
upon the very rockets that launch these satellites into orbit.
<p><a href="http://www.voanews.com/content/nasa-satellite-system-to-get-upgrade/1593381.html">www.voanews.com/co
ntent/nasa-satellite-system-to-get-upgrade/1593381.html</a>
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[WRAP:fn VOAR1A_Flmsg.b2s]1.1.29
:hdr_fm:19
VOA 20130503181849
:hdr_ed:19
VOA 20130503181703
:mg:3167
VOA News
Science &
Technology
NASA Satellite System To Get
Upgrade
Suzanne Presto
January 29, 2013
If you've ever marveled at the
Hubble Space Telescope's colorful images of the cosmos or watched video of
astronauts in near-real time as they float through their lab on the ISS, you
have a fleet of satellites to thank.
Space Network
The satellites comprise NASA's
so-called 'Space Network,' formally known as the
Tracking and Data Relay Satellite System, or TDRS.
Badri Younes, NASA's deputy
associate administrator of Space Communications and Navigation, or SCaN,
says science as we know it - and NASA as we know it - would not exist
without such satellites.
"All of the beautiful images,
whether you are looking deep into space trying to discover the origin of the
universe, looking at the galaxies or looking at Earth trying to see the
trend in the weather and the changes that are taking place," come from
voice, video and data that people receive through SCaN, Younes told
reporters at a pre-launch briefing.
The Space Network is an aging
fleet that orbits the Earth, and it's about to get an upgrade with its first
new spacecraft since 2002.
Upgrade
The U.S. space agency is
preparing to launch the first of a new generation of communications
satellites to link control centers here on Earth with NASA spacecraft,
including the International Space Station. The satellite, called TDRS-K, is
scheduled to launch aboard an Atlas V rocket from Cape Canaveral in Florida
Wednesday night.
It will join seven surviving
satellites in the TDRS set. Two have been retired, boosted about 400
kilometers higher into so-called "disposal orbit." One is in storage in
orbit. Two more will follow TDRS-K.
The new satellite was designed
for a lifespan of 15 years, but it could last much longer.
Legacies and the Future
NASA says the first of these
satellites, launched 30 years ago, was used to support the first
telemedicine surgery at the South Pole. That was when doctors in the
northeastern U.S. state of Massachusetts were able to assist a physician in
repairing the knee of a meteorologist in Antarctica back in 2002.
"Launch is just the beginning of
this satellite's journey and the addition of TDRS-K to the es Jf ntion will
continue the successful legacy of the project and strengthen NASA's
communication system that is so vital for the International Space Station
and many other satellites that are in orbit today and will be in orbit in
tsio�mKtz�osaid Vernon Thorp,
who handles NASA missions at rocket-supplier United Launch Alliance.
Thorp added that the TDRS
constellation even helps scientists improve upon the very rockets that
launch these satellites into orbit.
www.voanews.com/co ntent/nasa-satellite-system-to-get-upgrade/1593381.html
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