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Showing posts with label NASA. Show all posts
Showing posts with label NASA. Show all posts

Sunday, July 21, 2013

SPACE AGENCIES RELEASE STATEMENT ON SPACE STATION BENEFITS DURING DISASTERS ON EARTH

FROM:  NASA
NASA, International Space Agencies Note Benefits of Space Station during Disasters on Earth

WASHINGTON -- The International Space Station (ISS) partner agencies released a statement Wednesday on the benefits of the space station during natural disasters on Earth.

Flying 250 miles above the planet and circling it every 90 minutes, the orbiting outpost provides a unique vantage point from which images of Earth can play an important role in helping emergency responders know what areas are most in need during natural disasters.

International Space Station Multilateral Coordination Board Statement on the Ability of the Space Station to Provide Assistance during Natural Disasters on Earth.

The International Space Station is an extraordinary global research facility on which the ISS Partnership is carrying out research at an unprecedented rate. Many of the activities on this unique platform yield valuable benefits to society.
Although each Space Station Partner has distinct agency goals for Station research, each Partner shares a unified goal to extend the resulting knowledge for the betterment of humanity. In 2012, the ISS Partnership published "International Space Station Benefits for Humanity," illustrating specific successful humanitarian accomplishments. This publication highlights ISS contributions in Earth observation and disaster response, education, and human health that are improving the lives of many throughout the world.

ISS Earth observation is one of the primary areas of focus for ISS research. A unique complement of automated and crew-operated Earth observation assets are on board the ISS. In addition, the orbit of the ISS provides a distinct perspective over Earth targets that augments polar-orbiting remote sensing spacecraft. As a result, the ISS can provide an immediate benefit to regions that have experienced natural disasters, such as floods, wildfires, large storm systems, earthquakes, tsunamis, and volcanic eruptions. The data provided from ISS is a complement to the data provided by Earth Observation satellites through the International Charter "Space and Major Disasters," of which several of the ISS Partners are members.
Through the ISS Program Science Forum's Earth Observation Working Group and under the leadership of the Japan Aerospace Exploration Agency and the National Aeronautics and Space Administration, ISS Earth Observation assets are supporting global response efforts for regions experiencing natural disasters by collecting imagery of disaster-stricken areas on a best-effort basis. In recent months, the ISS Partners have worked on procedures to efficiently contribute to disaster response with the image data taken by the ISS crew members and ISS Earth observation payloads. Recent imagery campaigns in response to calls for data include: crew Earth observations of areas flooded in southern Russia; imagery of areas in Haiti and the Atlantic coast of the United States that were impacted by hurricane Sandy; multispectral imagery collected by the ISS Agricultural Camera (ISSAC) of flooded regions in Nigeria and Pakistan.
Additional payloads supporting this effort include the Hyperspectral Imager for the Coastal Ocean (HICO), the Super Sensitive High Definition TV (SS-HDTV) camera, the Multipurpose Consolidated Experiment (MCE) high definition TV camera (KIBO HDTV-EF), and the ISS SERVIR Environmental Research and Visualization System (ISERV). New sensors will soon be available, expanding the Earth observation capabilities on the ISS and the contributions of data to regions affected by natural disasters.

The ISS Program will continue to contribute regional data collected by ISS sensors and crew members in response to natural disasters. The ISS Partners are committed to continuing to share this unique asset in space and the benefits it brings to life on Earth.


Monday, March 4, 2013

SPACEX MAKES SECOND LAUNCH TO SPACE STATION

FROM: U.S. AIR FORCE SPACE COMMAND

02/1/2013 - CAPE CANAVERAL AIR FORCE STATION, Fla. -- Space Exploration Technologies' (SpaceX) completed a successful launch of their Falcon 9 Dragon spacecraft, called Dragon CRS 2, from Space Launch Complex 40 here today at 10:10 a.m. EDT with safety and range support provided by service members assigned to the 45th Space Wing.

A combined team of military, government civilians and contractors from across the 45th Space Wing provided support to the mission, including weather forecasts, launch and range operations, security, safety and public affairs.

The wing also provided its network of radar, telemetry, optical and communications instrumentation to facilitate a safe launch on the Eastern Range.

This is the second of 12 re-supply missions to the International Space Station by Space X.

The commander of the 45th Space Wing, who also served as the Launch Decision Authority for this historic launch, praised the work of all those involved in making this launch a success.

"We applaud SpaceX and NASA for their great work; and we also praise the teamwork between our wing and all our mission partners involved in making this mission a success," said Brig. Gen. Anthony Cotton, commander, 45th Space Wing.


 

Tuesday, December 25, 2012

THE ANTARTIC ICE BRIDGE

FROM:  NASA



OPERATION ICEBRIDGE: Exploring Antarctica Operation IceBridge is an airbone NASA mission aimed at studying changes in land and sea ice at Earth’s poles. In October and November 2012, IceBridge completed its fourth Antarctic campaign. Twelve of the campaign’s missions focused on changes in land ice, while the remaining four studied the ice that covers the seas of Weddell, Bellingshausen and Amundsen, in the west coast of the continent.

Thursday, November 1, 2012

SANDY LIVED VIOLENTLY AND DIED WEAK AND HATED

FROM:  NASA
GOES-13 Sees Life and Death of Hurricane Sandy


This animation of satellite imagery shows the life of Hurricane Sandy from its development in the Caribbean Sea on Oct. 21, through its track up the U.S. East coast and landfall. The animation continues through Oct. 31 when Sandy had weakened to a remnant low pressure area. Credit: NASA GOES Project

Wednesday, June 20, 2012

NASA PARTICIPATED IN STUDY THAT FINDS ANTARCTICA WAS MUCH WARMER IN THE PAST


FROM: NASA 
WASHINGTON -- A new university-led study with NASA participation finds ancient Antarctica was much warmer and wetter than previously 
suspected. The climate was suitable to support substantial vegetation
-- including stunted trees -- along the edges of the frozen
continent.

The team of scientists involved in the study, published online June 17
in Nature Geoscience, was led by Sarah J. Feakins of the University of Southern California in Los Angeles, and included researchers from 
NASA's Jet Propulsion Laboratory in Pasadena, Calif., and Louisiana
State University in Baton Rouge.

By examining plant leaf wax remnants in sediment core samples taken
from beneath the Ross Ice Shelf, the research team found summer
temperatures along the Antarctic coast 15 to 20 million years ago
were 20 degrees Fahrenheit (11 degrees Celsius) warmer than today,
with temperatures reaching as high as 45 degrees Fahrenheit (7
degrees Celsius). Precipitation levels also were found to be several
times higher than today.

"The ultimate goal of the study was to better understand what the
future of climate change may look like," said Feakins, an assistant
professor of Earth sciences at the USC Dornsife College of Letters,
Arts and Sciences. "Just as history has a lot to teach us about the
future, so does past climate. This record shows us how much warmer
and wetter it can get around the Antarctic ice sheet as the climate
system heats up. This is some of the first evidence of just how much
warmer it was."

Scientists began to suspect that high-latitude temperatures during the
middle Miocene epoch were warmer than previously believed when
co-author Sophie Warny, assistant professor at LSU, discovered large
quantities of pollen and algae in sediment cores taken around
Antarctica. Fossils of plant life in Antarctica are difficult to come
by because the movement of the massive ice sheets covering the
landmass grinds and scrapes away the evidence.

"Marine sediment cores are ideal to look for clues of past vegetation,
as the fossils deposited are protected from ice sheet advances, but
these are technically very difficult to acquire in the Antarctic and
require international collaboration," said Warny.

Tipped off by the tiny pollen samples, Feakins opted to look at the
remnants of leaf wax taken from sediment cores for clues. Leaf wax
acts as a record of climate change by documenting the hydrogen
isotope ratios of the water the plant took up while it was alive.

"Ice cores can only go back about one million years," Feakins said.
"Sediment cores allow us to go into 'deep time.'"

Based upon a model originally developed to analyze hydrogen isotope
ratios in atmospheric water vapor data from NASA's Aura spacecraft,
co-author and JPL scientist Jung-Eun Lee created experiments to find
out just how much warmer and wetter climate may have been.

"When the planet heats up, the biggest changes are seen toward the
poles," Lee said. "The southward movement of rain bands associated
with a warmer climate in the high-latitude southern hemisphere made
the margins of Antarctica less like a polar desert, and more like
present-day Iceland."

The peak of this Antarctic greening occurred during the middle Miocene
period, between 16.4 and 15.7 million years ago. This was well after
the age of the dinosaurs, which became extinct 64 million years ago.
During the Miocene epoch, mostly modern-looking animals roamed Earth,
such as three-toed horses, deer, camel and various species of apes.
Modern humans did not appear until 200,000 years ago.

Warm conditions during the middle Miocene are thought to be associated
with carbon dioxide levels of around 400 to 600 parts per million
(ppm). In 2012, carbon dioxide levels have climbed to 393 ppm, the
highest they've been in the past several million years. At the
current rate of increase, atmospheric carbon dioxide levels are on
track to reach middle Miocene levels by the end of this century.

High carbon dioxide levels during the middle Miocene epoch have been
documented in other studies through multiple lines of evidence,
including the number of microscopic pores on the surface of plant
leaves and geochemical evidence from soils and marine organisms.
While none of these 'proxies' is as reliable as the bubbles of gas
trapped in ice cores, they are the best evidence available this far
back in time. While scientists do not yet know precisely why carbon
dioxide was at these levels during the middle Miocene, high carbon
dioxide, together with the global warmth documented from many parts
of the world and now also from the Antarctic region, appear to
coincide during this period in Earth's history.

This research was funded by the U.S. National Science Foundation with
additional support from NASA. The California Institute of Technology
in Pasadena manages JPL for NASA.

Tuesday, June 19, 2012

INSTRUMENT DELIVERED FOR JAMES WEBB TELESCOPE



FROM:  NASA
WASHINGTON -- The first of four instruments to fly aboard NASA's James
Webb Space Telescope (Webb) has been delivered to NASA. The
Mid-Infrared Instrument (MIRI) will allow scientists to study cold
and distant objects in greater detail than ever before.

MIRI arrived at NASA's Goddard Space Flight Center in Greenbelt, Md.,
May 29. It has been undergoing inspection before being integrated
into WebbĆ¢€™s science instrument payload known as the Integrated
Science Instrument Module (ISIM).

Assembled at and shipped from the Science and Technology Facilities
Council's Rutherford Appleton Laboratory in the United Kingdom, MIRI
was developed by a consortium of 10 European institutions and NASA's
Jet Propulsion Laboratory (JPL) in Pasadena, Calif., after having
been handed over to the European Space Agency.

MIRI will observe light with wavelengths in the mid-infrared range of
5 microns to 28 microns, which is a longer wavelength than human eyes
can detect. It is the only instrument of the four with this
particular ability to observe the physical processes occurring in the
cosmos.

"MIRI will enable Webb to distinguish the oldest galaxies from more
evolved objects that have undergone several cycles of star birth and
death," said Matt Greenhouse, ISIM project scientist at Goddard.
"MIRI also will provide a unique window into the birth places of
stars which are typically enshrouded by dust that shorter wavelength
light cannot penetrate."

MIRI's sensitive detectors will allow it to observe light, cool stars
in very distant galaxies; unveil newly forming stars within our Milky
Way; find signatures of the formation of planets around stars other
than our own; and take imagery and spectroscopy of planets, comets
and the outermost bits of debris in our solar system. MIRI's images
will enable scientists to study an objectĆ¢€™s shape and structure.

The most powerful space telescope ever built, Webb is the successor to
NASA's Hubble Space Telescope. WebbĆ¢€™s four instruments will reveal
how the universe evolved from the Big Bang to the formation of our
solar system. Webb is a joint project of NASA, the European Space
Agency and the Canadian Space Agency.

NASA AND FAA TO DISCUSS COMMERCIAL HUMAN SPACE TRANSPORTATION NATIONAL GOALS THIS MORNING


FROM: NASA
WASHINGTON -- NASA Administrator Charles Bolden and Federal Aviation 
Administration (FAA) acting Administrator Michael Huerta will 
participate in a media teleconference at 11 a.m. EDT today to discuss 
advancements in commercial spaceflight. 

Reporters interested in participating in the teleconference should 
contact Joshua Buck at NASA at 202-358-1100 or jbuck@nasa.gov, or 
Hank Price at FAA at 202-267-3883 or hank.price@faa.gov by 10 a.m. 
Monday. 

Friday, June 15, 2012

SMALL PLANETS DON'T NEED STARS WITH HEAVY METAL


MOFFETT FIELD, Calif. -- The formation of small worlds like Earth
previously was thought to occur mostly around stars rich in heavy
elements such as iron and silicon. However, new ground-based
observations, combined with data collected by NASA's Kepler space
telescope, shows small planets form around stars with a wide range of
heavy element content and suggests they may be widespread in our
galaxy.

A research team led by Lars A. Buchhave, an astrophysicist at the
Niels Bohr Institute and the Centre for Star and Planet Formation at
the University of Copenhagen, studied the elemental composition of
more than 150 stars harboring 226 planet candidates smaller than
Neptune.

"I wanted to investigate whether small planets needed a special
environment in order to form, like the giant gas planets, which we
know preferentially develop in environments with a high content of
heavy elements," said Buchhave. "This study shows that small planets
do not discriminate and form around stars with a wide range of heavy
metal content, including stars with only 25 percent of the sun's
metallicity."

Astronomers refer to all chemical elements heavier than hydrogen and
helium as metals. They define metallicity as the metal content of
heavier elements in a star. Stars with a higher fraction of heavy
elements than the sun are considered metal-rich. Stars with a lower
fraction of heavy elements are considered metal-poor.

Planets are created in disks of gas and dust around new stars. Planets
like Earth are composed almost entirely of elements such as iron,
oxygen, silicon and magnesium. The metallicity of a star mirrors the
metal content of the planet-forming disk. Astronomers have
hypothesized that large quantities of heavy elements in the disk
would lead to more efficient planet formation. It has long been noted
that giant planets with short orbital periods tend to be associated
with metal-rich stars.

Unlike gas giants, the occurrence of smaller planets is not strongly
dependent on the heavy element content of their host stars. Planets
up to four times the size of Earth can form around stars with a wide
range of heavy element content, including stars with a lower
metallicity than the sun. The findings are described in a new study
published in the journal Nature.

"Kepler has identified thousands of planet candidates, making it
possible to study big-picture questions like the one posed by Lars.
Does nature require special environments to form Earth-size planets?"
said Natalie Batalha, Kepler mission scientist at NASA's Ames
Research Center at Moffett Field, Calif. "The data suggest that small
planets may form around stars with a wide range of metallicities --
that nature is opportunistic and prolific, finding pathways we might
otherwise have thought difficult."

The ground-based spectroscopic observations for this study were made
at the Nordic Optical Telescope on La Palma in the Canary Islands;
Fred Lawrence Whipple Observatory on Mt. Hopkins in Ariz.; McDonald
Observatory at the University of Texas at Austin; and W.M. Keck
Observatory atop Mauna Kea in Hawaii.

Launched in March 2009, Kepler searches for planets by continuously
monitoring more than 150,000 stars, looking for telltale dips in
their brightness caused by passing, or transiting, planets. At least
three transits are required to verify a signal as a planet. Follow-up
observations from ground-based telescopes are also needed to confirm
a candidate as a planet.

Ames manages Kepler's ground system development, mission operations
and science data analysis. NASA's Jet Propulsion Laboratory in
Pasadena, Calif., managed the Kepler mission development.

Ball Aerospace & Technologies Corp. in Boulder, Colo., developed the
Kepler flight system and supports mission operations with the
Laboratory for Atmospheric and Space Physics at the University of
Colorado in Boulder.

The Space Telescope Science Institute in Baltimore archives hosts and
distributes Kepler science data. Kepler is NASA's 10th Discovery
Mission and is funded by NASA's Science Mission Directorate at the
agency's headquarters in Washington.


Sunday, June 10, 2012

NASA'S SPITZER FINDS FIRST OBJECTS BURNED FURIOUSLY


FROM:  NASA
WASHINGTON -- The faint, lumpy glow from the very first objects in the
universe may have been detected with the best precision yet using
NASA's Spitzer Space Telescope. The objects could be wildly massive
stars or voracious black holes. They are too far away to be seen
individually, but Spitzer has captured new, convincing evidence of
what appears to be the collective pattern of their infrared light.

The observations help confirm the first objects were numerous in
quantity and furiously burned cosmic fuel.

"These objects would have been tremendously bright," said Alexander
"Sasha" Kashlinsky of NASA's Goddard Space Flight Center in
Greenbelt, Md., lead author of a new paper appearing in The
Astrophysical Journal. "We can't yet directly rule out mysterious
sources for this light that could be coming from our nearby universe,
but it is now becoming increasingly likely that we are catching a
glimpse of an ancient epoch. Spitzer is laying down a roadmap for
NASA's upcoming James Webb Telescope, which will tell us exactly what
and where these first objects were."

Spitzer first caught hints of this remote pattern of light, known as
the cosmic infrared background, in 2005, and again with more
precision in 2007. Now, Spitzer is in the extended phase of its
mission, during which it performs more in-depth studies on specific
patches of the sky. Kashlinsky and his colleagues used Spitzer to
look at two patches of sky for more than 400 hours each.

The team then carefully subtracted all of the known stars and galaxies
in the images. Rather than being left with a black, empty patch of
sky, they found faint patterns of light with several telltale
characteristics of the cosmic infrared background. The lumps in the
pattern observed are consistent with the way the very distant objects
are thought to be clustered together.

Kashlinsky likens the observations to looking for Fourth of July
fireworks in New York City from Los Angeles. First, you would have to
remove all the foreground lights between the two cities, as well as
the blazing lights of New York City itself. You ultimately would be
left with a fuzzy map of how the fireworks are distributed, but they
would still be too distant to make out individually.

"We can gather clues from the light of the universe's first
fireworks," said Kashlinsky. "This is teaching us that the sources,
or the "sparks," are intensely burning their nuclear fuel."

The universe formed roughly 13.7 billion years ago in a fiery,
explosive Big Bang. With time, it cooled and, by around 500 million
years later, the first stars, galaxies and black holes began to take
shape. Astronomers say some of that "first light" may have traveled
billions of years to reach the Spitzer Space Telescope. The light
would have originated at visible or even ultraviolet wavelengths and
then, because of the expansion of the universe, stretched out to the
longer, infrared wavelengths observed by Spitzer.

The new study improves on previous observations by measuring this
cosmic infrared background out to scales equivalent to two full moons
-- significantly larger than what was detected before. Imagine trying
to find a pattern in the noise in an old-fashioned television set by
looking at just a small piece of the screen. It would be hard to know
for certain if a suspected pattern was real. By observing a larger
section of the screen, you would be able to resolve both small- and
large-scale patterns, further confirming your initial suspicion.

Likewise, astronomers using Spitzer have increased the amount of the
sky examined to obtain more definitive evidence of the cosmic
infrared background. The researchers plan to explore more patches of
sky in the future to gather more clues hidden in the light of this
ancient era.

"This is one of the reason's we are building the James Webb Space
Telescope," said Glenn Wahlgren, Spitzer program scientist at NASA
Headquarters in Washington. "Spitzer is giving us tantalizing clues,
but James Webb will tell us what really lies at the era where stars
first ignited."

Other authors are Richard Arendt of Goddard and the University of
Maryland in Baltimore; Matt Ashby and Giovanni Fazio of the
Harvard-Smithsonian Center for Astrophysics in Cambridge, Mass.; and
John Mather and Harvey Moseley of Goddard. Fazio led the initial
observations of these sky fields.

NASA's Jet Propulsion Laboratory (JPL), Pasadena, Calif., manages the
Spitzer Space Telescope mission for the agency's Science Mission
Directorate in Washington. Science operations are conducted at the
Spitzer Science Center at the California Institute of Technology
(Caltech) in Pasadena. Data are archived at the Infrared Science
Archive housed at the Infrared Processing and Analysis Center at
Caltech. Caltech manages JPL for NASA.

Saturday, June 2, 2012

NASA PREPARES LAUNCH OF NEWEST X-RAY TELESCOPE ARRAY


FROM:  NASA
WASHINGTON -- NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR,
is being prepared for the final journey to its launch pad on
Kwajalein Atoll in the central Pacific Ocean. The mission will study
everything from massive black holes to our own sun. It is scheduled
to launch no earlier than June 13.

"We will see the hottest, densest and most energetic objects with a
fundamentally new high-energy X-ray telescope that can obtain much
deeper and crisper images than before," said Fiona Harrison, the
NuSTAR principal investigator at the California Institute of
Technology (Caltech) in Pasadena, Calif., who first conceived of the
mission 20 years ago.

The observatory is perched atop an Orbital Sciences Corporation
Pegasus XL rocket. If the mission passes its Flight Readiness Review
on June 1, the rocket will be strapped to the bottom of an aircraft,
the L-1011 Stargazer, also operated by Orbital, on June 2. The
Stargazer is scheduled to fly from Vandenberg Air Force Base in
central California to Kwajalein June 5-6.

On launch day, the Stargazer will take off and at around 11:30 a.m.
EDT (8:30 a.m. PDT) will drop the rocket, which will then ignite and
carry NuSTAR to a low orbit around Earth.

"NuSTAR uses several innovations for its unprecedented imaging
capability and was made possible by many partners," said Yunjin Kim,
the project manager for the mission at NASA's Jet Propulsion
Laboratory (JPL) in Pasadena, Calif. "We're all really excited to see
the fruition of our work begin its mission in space."

NuSTAR will be the first space telescope to create focused images of
cosmic X-rays with the highest energies. These are the same types of
X-rays that doctors use to see your bones and airports use to scan
your bags. The telescope will have more than 10 times the resolution,
and more than 100 times the sensitivity, of its predecessors while
operating in a similar energy range.

The mission will work with other telescopes in space now, including
NASA's Chandra X-ray Observatory, which observes lower-energy X-rays.
Together, they will provide a more complete picture of the most
energetic and exotic objects in space, such as black holes, dead
stars and jets traveling near the speed of light.
"NuSTAR truly demonstrates the value that NASA's research and
development programs provide in advancing the nation's science
agenda," said Paul Hertz, NASA's Astrophysics Division director.
"Taking just over four years from receiving the project go-ahead to
launch, this low-cost Explorer mission will use new mirror and
detector technology that was developed in NASA's basic research
program and tested in NASA's scientific ballooning program. The
result of these modest investments is a small space telescope that
will provide world-class science in an important but relatively
unexplored band of the electromagnetic spectrum."

NuSTAR will study black holes that are big and small, far and near,
answering questions about the formation and physics behind these
wonders of the cosmos. The observatory will also investigate how
exploding stars forge the elements that make up planets and people,
and it will even study our own sun's atmosphere.

The observatory is able to focus the high-energy X-ray light into
sharp images because of a complex, innovative telescope design.
High-energy light is difficult to focus because it only reflects off
mirrors when hitting at nearly parallel angles. NuSTAR solves this
problem with nested shells of mirrors. It has the most nested shells
ever used in a space telescope, 133 in each of two optic units. The
mirrors were molded from ultra-thin glass similar to that found in
laptop screens and glazed with even thinner layers of reflective
coating.

The telescope also consists of state-of-the-art detectors and a
lengthy 33-foot (10-meter) mast, which connects the detectors to the
nested mirrors, providing the long distance required to focus the
X-rays. This mast is folded up into a canister small enough to fit
atop the Pegasus launch vehicle. It will unfurl about seven days
after launch. About 23 days later, science operations will begin.
NuSTAR is a Small Explorer mission led by Caltech and managed by JPL
for NASA's Science Mission Directorate in Washington. The spacecraft
was built by Orbital Sciences Corporation in Dulles, Va. Its
instrument was built by a consortium including Caltech; JPL;
University of California at Berkeley (UC Berkeley); Columbia
University in New York; NASA's Goddard Space Flight Center in
Greenbelt, Md.; the Danish Technical University in Denmark; Lawrence
Livermore National Laboratory in Livermore, Calif.; and ATK Aerospace
Systems in Goleta, Calif. NuSTAR will be operated by UC Berkeley,
with the Italian Space Agency providing its equatorial ground station
located at Malindi, Kenya. The mission's outreach program is based at
Sonoma State University in Rohnert Park, Calif. NASA's Explorer
Program is managed by Goddard. JPL is managed by Caltech for NASA.



Sunday, May 13, 2012

NEW EARTH?

FROM:  NASA
News Releases
May 8, 2012 RELEASE : 12-138  NASA's Spitzer Sees the Light of Alien "Super Earth"  WASHINGTON -- NASA's Spitzer Space Telescope has detected light emanating from a "super-Earth" planet beyond our solar system for the first time. While the planet is not habitable, the detection is a historic step toward the eventual search for signs of life on other planets.

"Spitzer has amazed us yet again," said Bill Danchi, Spitzer program scientist at NASA Headquarters in Washington. "The spacecraft is pioneering the study of atmospheres of distant planets and paving the way for NASA's upcoming James Webb Space Telescope to apply a similar technique on potentially habitable planets."

The planet, called 55 Cancri e, falls into a class of planets termed super Earths, which are more massive than our home world but lighter than giant planets like Neptune. Fifty-five Cancri e is about twice as big and eight times as massive as Earth. The planet orbits a bright star, called 55 Cancri, in a mere 18 hours.

Previously, Spitzer and other telescopes were able to study the planet by analyzing how the light from 55 Cancri changed as the planet passed in front of the star. In the new study, Spitzer measured how much infrared light comes from the planet itself. The results reveal the planet is likely dark and its sun-facing side is more than 2,000 Kelvin (3,140 degrees Fahrenheit), hot enough to melt metal.

The new information is consistent with a prior theory that 55 Cancri e is a water world: a rocky core surrounded by a layer of water in a "supercritical" state where it is both liquid and gas, and topped by a blanket of steam.

"It could be very similar to Neptune, if you pulled Neptune in toward our sun and watched its atmosphere boil away," said Michaël Gillon of Université de Liège in Belgium, principal investigator of the research, which appears in the Astrophysical Journal. The lead author is Brice-Olivier Demory of the Massachusetts Institute of Technology in Cambridge.

The 55 Cancri system is relatively close to Earth at 41 light-years away. It has five planets, with 55 Cancri e being the closest to the star and tidally locked, so one side always faces the star. Spitzer discovered the sun-facing side is extremely hot, indicating the planet probably does not have a substantial atmosphere to carry the sun's heat to the unlit side.

NASA's James Webb Space Telescope, scheduled to launch in 2018, likely will be able to learn even more about the planet's composition. The telescope might be able to use a similar infrared method as Spitzer to search other potentially habitable planets for signs of molecules possibly related to life.

"When we conceived of Spitzer more than 40 years ago, exoplanets hadn't even been discovered," said Michael Werner, Spitzer project scientist at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, Calif. "Because Spitzer was built very well, it's been able to adapt to this new field and make historic advances such as this."

In 2005, Spitzer became the first telescope to detect light from a planet beyond our solar system. To the surprise of many, the observatory saw the infrared light of a "hot Jupiter," a gaseous planet much larger than the solid 55 Cancri e. Since then, other telescopes, including NASA's Hubble and Kepler space telescopes, have performed similar feats with gas giants using the same method.

In this method, a telescope gazes at a star as a planet circles behind it. When the planet disappears from view, the light from the star system dips ever so slightly, but enough that astronomers can determine how much light came from the planet itself. This information reveals the temperature of a planet, and, in some cases, its atmospheric components. Most other current planet-hunting methods obtain indirect measurements of a planet by observing its effects on the star.

During Spitzer's ongoing extended mission, steps were taken to enhance its unique ability to see exoplanets, including 55 Cancri e. Those steps, which included changing the cycling of a heater and using an instrument in a new way, led to improvements in how precisely the tele

JPL manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate in Washington. Science operations are conducted at the Spitzer Science Center at the California Institute of Technology (Caltech) in Pasadena. Data are archived at the Infrared Science Archive housed at the Infrared Processing and Analysis Center at Caltech. Caltech manages JPL for NASA

Saturday, April 28, 2012

NASA SAYS AT LEAST 1500 PLANETS WITHIN JUST 50 LIGHT YEARS OF EARTH


FROM:  NASA
the stars in the Milky Way. The planets, their orbits and their host stars are all vastly magnified compared to their real separations. A six-year search that surveyed millions of stars using the microlensing technique concluded that planets around stars are the rule rather than the exception. The average number of planets per star is greater than one. This means that there is likely to be a minimum of 1,500 planets within just 50 light-years of Earth. The results are based on observations taken over six years by the PLANET (Probing Lensing Anomalies NETwork) collaboration, which was founded in 1995. The study concludes that there are far moThis is based on calibrating a planetary mass function that shows the number of planets increases for lower mass worlds. A rough estimate from this survey would point to the existence of more than 10 billion terrestrial planets across our galaxy. The results were published in the Jan. 12, 2012, issue of the British science journal Nature. Image Credit: NASA, ESA, and M. Kornmesser (ESO)


Wednesday, April 25, 2012

NASA TESTS GPS MONITORING SYSTEM FOR EARTHQUAKES

FROM: NASA
WASHINGTON -- The space-based technology that lets GPS-equipped 
motorists constantly update their precise location will undergo a 
major test of its ability to rapidly pinpoint the location and 
magnitude of strong earthquakes across the western United States. 
Results from the new Real-time Earthquake Analysis for Disaster 
(READI) Mitigation Network soon could be used to assist prompt 
disaster response and more accurate tsunami warnings. 

The new research network builds on decades of technology development 
supported by the National Science Foundation, the Department of 
Defense, NASA, and the U.S. Geological Survey (USGS). The network 
uses real-time GPS measurements from nearly 500 stations throughout 
California, Oregon and Washington. When a large earthquake is 
detected, GPS data are used to automatically calculate its vital 
characteristics including location, magnitude and details about the 
fault rupture. 

"With the READI network we are enabling continued development of 
real-time GPS technologies to advance national and international 
early warning disaster systems," said Craig Dobson, natural hazards 
program manager in the Earth Science Division at NASA Headquarters in 
Washington. "This prototype system is a significant step towards 
realizing the goal of providing Pacific basin-wide natural hazards 
capability around the Pacific 'Ring of Fire.'" 

Accurate and rapid identification of earthquakes of magnitude 6.0 and 
stronger is critical for disaster response and mitigation efforts, 
especially for tsunamis. Calculating the strength of a tsunami 
requires detailed knowledge of the size of the earthquake and 
associated ground movements. Acquiring this type of data for very 
large earthquakes is a challenge for traditional seismological 
instruments that measure ground shaking. 

High-precision, second-by-second measurements of ground displacements 
using GPS have been shown to reduce the time needed to characterize 
large earthquakes and to increase the accuracy of subsequent tsunami 
predictions. After the capabilities of the network have been fully 
demonstrated, it is intended to be used by appropriate natural hazard 
monitoring agencies. USGS and the National Oceanic and Atmospheric 
Administration are responsible for detecting and issuing warnings on 
earthquakes and tsunamis, respectively. 

"By using GPS to measure ground deformation from large earthquakes, we 
can reduce the time needed to locate and characterize the damage from 
large seismic events to several minutes," said Yehuda Bock, director 
of Scripps Institution of Oceanography's Orbit and Permanent Array 
Center in La Jolla, Calif. "We now are poised to fully test the 
prototype system this year." 

The READI network is a collaboration of many institutions including 
Scripps at the University of California in San Diego; Central 
Washington University in Ellensburg; the University of Nevada in 
Reno; California Institute of Technology/Jet Propulsion Laboratory 
(JPL) in Pasadena; UNAVCO in Boulder, Colo.; and the University of 
California at Berkeley. 

NASA, NSF, USGS, and other federal, state, and local partners support 
the GPS stations in the network, including the EarthScope Plate 
Boundary Observatory, the Pacific Northwest Geodetic Array, the Bay 
Area Regional Deformation Array and the California Real-Time Network. 


"The relatively small investments in GPS-based natural hazards systems 
have revolutionized the way we view the Earth and allowed us to 
develop this prototype system with great potential benefits for the 
infrastructure and population in earthquake-prone states in the 
western United States," said Frank Webb, Earth Science Advanced 
Mission Concepts program manager at JPL. 

The READI network is the outgrowth of nearly 25 years of U.S. 
government research efforts to develop the capabilities and 
applications of GPS technology. The GPS satellite system was created 
by the Department of Defense for military and ultimately civil 
positioning needs. NASA leveraged this investment by supporting 
development of a global GPS signal receiving network to improve the 
accuracy and utility of GPS positioning information. Today that 
capability provides real-time, pinpoint positioning and timing for a 
wide variety of uses from agriculture to Earth exploration. 

"Conventional seismic networks have consistently struggled to rapidly 
identify the true size of great earthquakes during the last decade," 
said Timothy Melbourne, director of the Central Washington 
University's Pacific Northwest Geodetic Array. "This GPS system is 
more likely to provide accurate and rapid estimates of the location 
and amount of fault slip to fire, utility, medical and other 
first-response teams." 
The GPS earthquake detection capability was first demonstrated by 
NASA-supported research on a major 2004 Sumatra quake conducted by 
Geoffrey Blewitt and colleagues at the University of Nevada in Reno. 

Thursday, April 5, 2012

"NASA" FROM SPACE


FROM NASA
STS-116 astronaut Bob Curbeam met the NASA logo up close on his Dec. 14, 2006, spacewalk, during which he performed tasks to complete the International Space Station. During space shuttle Discovery’s mission to the station, the STS-116 crew added the P5 spacer truss segment and rewired the station’s power system, preparing it to support the station’s final configuration and the arrival of additional science modules. A fourth and final spacewalk was added to allow the crew to retract solar arrays that had folded improperly. Curbeam was selected as an astronaut in 1994 and subsequently flew on three space shuttle missions. During the STS-116 mission, he became the first shuttle astronaut to conduct four spacewalks in a single mission. Curbeam also flew on STS-85 in August 1997 and STS-98 in February 2001. He accumulated 45 hours and 34 minutes of spacewalking time and more than 900 hours in space. Image Credit: NASA

Monday, April 2, 2012

WHEN BUZZ CAME BACK FROM SPACE


The photo and excerpt are from the NASA website:
NASA Deputy Administrator Lori Garver addresses the audience with Buzz Lightyear, left, of the film "Toy Story" at the Smithsonian National Air and Space Museum's Moving Beyond Earth Gallery, Thursday, March 29, 2012, in Washington. Launched May 31, 2008 aboard the space shuttle Discovery (STS-124) and returned on Discovery 15 months later with STS-128, the 12-inch action figure is the longest serving toy in space and became part of the museum's popular culture collection. Image Credit: NASA/Paul E. Alers




Thursday, March 22, 2012

NASA ASKS STUDENTS TO DESIGN NEW DEEP SPACE HABITAT

The following excerpt is from the NASA website:
HOUSTON -- NASA is offering college and university students a chance 
to help design a deep space habitat. The Exploration Habitat (X-Hab) 
Academic Innovation Challenge is accepting applications for the 2013 
challenge, inviting students to design, manufacture, assemble and 
test systems for use on NASA's deep space habitat prototype. 

Past projects have included an inflatable loft for crew sleeping 
quarters, plant growth systems and sample handling tools. This year, 
students in multiple disciplines can choose projects from a variety 
of possibilities, including photovoltaic solar arrays, a workstation 
to support human-robotic collaboration or a telepresence and holodeck 
conceptual system. Students will work together on potential solutions 
to needs future astronauts might have living and working outside 
Earth. 

"Students will play a vital role in our critical early system planning 
and development," said Alvin Drew, a NASA astronaut and habitat 
systems project manager at the agency's Johnson Space Center in 
Houston. "Their designs could become the basis for the concepts and 
technologies that will make up the habitat we eventually send to 
space." 

The X-Hab Challenge is part of a continuing effort to engage and 
retain students in science, technology, engineering and mathematics, 
or STEM, and provide a real-world challenge exposing them to 
engineering and design processes. NASA will directly benefit from the 
development of innovative habitation-related concepts and 
technologies that could be applied to future missions. 

The challenge is run by the National Space Grant Foundation for the 
deep space habitat project team at Johnson, which is part of NASA's 
Advanced Exploration Systems Program. The goal of for the X-Hab 
Challenge is to help NASA inspire the STEM workforce of the future 
and the next generation of explorers. Winners will receive between 
$10,000 and $49,000 to produce functional products based on their 
designs. Proposals are due May 2, 2012, and awardees should expect to 
deliver their product to Johnson in May or June 2013.