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quinta-feira, 30 de outubro de 2014

NASA WEB ·This Dark Nebula Looks Like it is Writhing in Agony

This Dark Nebula Looks Like it is Writhing in Agony


Foto: This Dark Nebula Looks Like it is Writhing in Agony  http://www.universetoday.com/115815/this-dark-nebula-looks-like-it-is-writhing-in-agony/

NASA WEB ·NASA Releases Photos of Aftermath of Launchpad Explosion NASA released images of the Mid-Atlantic Regional Spaceport at NASA’s Wallops Flight Facility in Virginia following the catastrophic failure of Orbital Science’s Antares rocket shortly after liftoff on Tuesday, Oct. 28. Visible is damage to the transporter erector launcher and lightning suppression rods, as well as debris around the pad. But given the spectacular secondary explosion when the rocket fell back to the pad, the damage – as viewed from the air – looks relatively minor.

NASA Releases Photos of Aftermath of Launchpad Explosion

NASA released images of the Mid-Atlantic Regional Spaceport at NASA’s Wallops Flight Facility in Virginia following the catastrophic failure of Orbital Science’s Antares rocket shortly after liftoff on Tuesday, Oct. 28. Visible is damage to the transporter erector launcher and lightning suppression rods, as well as debris around the pad. But given the spectacular secondary explosion when the rocket fell back to the pad, the damage – as viewed from the air – looks relatively minor.


Foto: NASA Releases Photos of Aftermath of Launchpad Explosion   NASA released images of the Mid-Atlantic Regional Spaceport at NASA’s Wallops Flight Facility in Virginia following the catastrophic failure of Orbital Science’s Antares rocket shortly after liftoff on Tuesday, Oct. 28. Visible is damage to the transporter erector launcher and lightning suppression rods, as well as debris around the pad. But given the spectacular secondary explosion when the rocket fell back to the pad, the damage – as viewed from the air – looks relatively minor.  http://www.universetoday.com/115833/nasa-releases-photos-of-aftermath-of-launchpad-explosion/

NASA WEB · Possible Bright Supernova Lights Up Spiral Galaxy M61 I sat straight up in my seat when I learned of the discovery of a possible new supernova in the bright Virgo galaxy M61. Since bright usually means close, this newly exploding star may soon become visible in smaller telescopes.

Possible Bright Supernova Lights Up Spiral Galaxy M61

I sat straight up in my seat when I learned of the discovery of a possible new supernova in the bright Virgo galaxy M61. Since bright usually means close, this newly exploding star may soon become visible in smaller telescopes.


Foto: Possible Bright Supernova Lights Up Spiral Galaxy M61  I sat straight up in my seat when I learned of the discovery of a possible new supernova in the bright Virgo galaxy M61.  Since bright usually means close,  this newly exploding star may soon become visible in smaller telescopes.  http://www.universetoday.com/115818/possible-bright-supernova-lights-up-spiral-galaxy-m61/

NASA WEB ·Astronomers Image the Exploding Fireball Stage of a Nova A team of astronomers led by Georgia State University astronomer Gail Schaefer, has captured the first images of a thermonuclear fireball from a nova star, allowing them to track the explosion as it expanded. 37 researchers from 17 institutions around the world, including the University of Sydney an…

NASA WEB ·Sun in a Solar Flare Frenzy as Giant Eruptions Continue Sun is in a real solar flare frenzy recently, continuing a week's worth of substantial flares beginning on Oct.19, 2014. It emitted two mid-level solar flares on Oct. 26 and Oct. 27. The first peaked at 8:34 pm EDT, and the second peaked almost 10 hours later at 6:09 am EDT. The first flare was clas…

NASA WEB · China Launches Shijian-11 Satellite China successfully launched an experimental satellite into preset orbit from Jiuquan Satellite Launch Center in its northwestern gobi desert on Monday. The Shijian-11-08 was boosted by a Long March-2C carrier rocket at 2:59 p.m. Beijing Time. The satellite, which was developed by China Spacesat Co.

NASA WEB ·ISS Dodges Space Junk from an Old Satellite The International Space Station (ISS) has successfully completed a space debris avoidance maneuver, a source with the Russian Mission Control Center told Interfax-AVN. "The maneuver was successful. Nothing threatens the flight," the source said. NASA said debris from an old, wrecked Russian satellit…

NASA WEB · Japan Shows Off Its Newest Asteroid Explorer Japan's space agency showed off a space probe to be launched next month that it hopes will answer questions about how life seeded Earth. The Japan Aerospace Exploration Agency (JAXA) intends to land Hayabusa 2 on an asteroid orbiting between Earth and Mars. It is set to be launched by an H-2A rocket…

NASA WEB · Lunar Reconnaissance Orbiter Finds LADEE Impact Crater NASA’s Lunar Reconnaissance Orbiter (LRO) spacecraft has spied a new crater on the lunar surface; one made from the impact of NASA’s Lunar Atmosphere and Dust Environment Explorer (LADEE) mission. LADEE was launched from Wallops Island on Sept. 6, 2013. The spacecraft was 2.37 m (7.8 ft) high and 1.

NASA WEB ·Russia Launches Progress Cargo Craft to ISS Hours After Antares Rocket Disaster Russia successfully launched an unmanned Soyuz-2.1a rocket Wednesday with Progress M-25M cargo craft carrying supplies for the International Space Station (ISS). Soyuz lifted off Baikonur cosmodrome in Kazakhstan at 3:10 a.m. EDT (1:10...

NASA WEB ·Confirming a 3-D Structural View of a Quasar Outflow A team of astronomers have observed a distant gravitationally-lensed quasar with the Subaru Telescope and concluded that the data indeed present a 3-D view of the structure around a quasar. Although the team had earlier suggested this as a possibility, the final conclusion was drawn only through add…

NASA WEB · Russian Progress Cargo Craft Docks with Space Station Traveling about 261 miles over the Atlantic Ocean, the unpiloted Progress M-25M Russian cargo craft docked at 9:09 a.m. EDT to the Pirs Docking Compartment of the International Space Station (ISS). “Progress M-25M has docked to docking compartment of module Pirs in Russian segment of the orbital sta

NASA WEB · ULA Successfully Launches GPS IIF-8 Satellite A United Launch Alliance (ULA) Atlas V rocket successfully launched the eighth Global Positioning System (GPS) IIF-8 satellite for the U.S. Air Force at 1:21 p.m. EDT Wednesday from Space Launch Complex-41, Cape Canaveral, Florida. “ULA is honored to work with this world-class U.S. government and co…

NASA WEB · Existence of a Group of 'Quiet' Quasars Confirmed Aeons ago, the universe was different: mergers of galaxies were common and gigantic black holes with masses equivalent to billions of times that of the Sun formed in their nuclei. As they captured the surrounding gas, these black holes emitted energy. Known as quasars, these very distant and tremend

NASA WEB · Largest Carbon Atoms Outside Our Milky Way Discovered Largest Carbon Atoms Outside Our Milky Way Discovered www.astrowatch.net An international team of astronomers under the guidance of graduate student Leah Morabito of Leiden Observatory has for the first time discovered the largest carbon atoms outside our Milky Way with the LOFAR radio telescope. In the future astronomers will be able to measure how cold and dense the ga…

quarta-feira, 29 de outubro de 2014

NASA WEB · Space Shuttle Program STS-81 Mission Commander Michael Baker prepares to enter the Space Shuttle Atlantis at Launch Pad 39B with help from White Room closeout crew members Chris Meinert (left) and Danny Wyatt. 01/12/1997



STS-81 Mission Commander Michael Baker prepares to enter the Space Shuttle Atlantis at Launch Pad 39B with help from White Room closeout crew members Chris Meinert (left) and Danny Wyatt. 01/12/1997
STS-81 Mission Commander Michael Baker prepares to enter the Space Shuttle Atlantis at Launch Pad 39B with help from White Room closeout crew members Chris Meinert (left) and Danny Wyatt.                 01/12/1997

NASA WEB · SETI Institute ‪#‎SetiTalks‬: 'Extending the Search for ETI communication to Near-Infrared Wavelengths' with Shelley Wright 10/28, 12:00 pm, PDT. We are poised to take advantage of a remarkable confluence of technological advances and scientific opportunity. For the first time, very fast, wide bandwidth, high-gain, low noise near-infrared avalanche photo diode (APDs) detectors are available and reasonably priced.



‪#‎SetiTalks‬: 'Extending the Search for ETI communication to Near-Infrared Wavelengths' with Shelley Wright 10/28, 12:00 pm, PDT.
We are poised to take advantage of a remarkable confluence of technological advances and scientific opportunity. For the first time, very fast, wide bandwidth, high-gain, low noise near-infrared avalanche photo diode (APDs) detectors are available and reasonably priced.
Tune in to learn the advantages of SETI searches at near-infrared wavelengths, and and out details about the initial observational setup and search strategies for SETI targets and other astronomical studies. 
#SetiTalks: 'Extending the Search for ETI communication to Near-Infrared Wavelengths' with Shelley Wright 10/28, 12:00 pm, PDT.   We are poised to take advantage of a remarkable confluence of technological advances and scientific opportunity. For the first time, very fast, wide bandwidth, high-gain, low noise near-infrared avalanche photo diode (APDs) detectors are available and reasonably priced.   Tune in to learn the advantages of SETI searches at near-infrared wavelengths, and and out details about the initial observational setup and search strategies for SETI targets and other astronomical studies. Full details here: http://buff.ly/1zxs6XI

NASA WEB ·Catastrophic Failure Dooms Antares Launch to Space Station – Gallery



Catastrophic Failure Dooms Antares Launch to Space Station – Gallery

Universe Today writer Ken Kremer was at the launch and writes about seeing the rocket explode:

NASA WALLOPS FLIGHT FACILITY, VA – Moments after a seemingly glorious liftoff, an Orbital Sciences Corp. commercial Antares rocket suffered a catastrophic failure and exploded into a spectacular aerial fireball over the launch pad at NASA’s Wallops Flight Facility on the eastern shore of Virginia that doomed the mission bound for the International Space Station on Tuesday, October 28.


Foto: Catastrophic Failure Dooms Antares Launch to Space Station – Gallery  Universe Today writer Ken Kremer was at the launch and writes about seeing the rocket explode:  NASA WALLOPS FLIGHT FACILITY, VA – Moments after a seemingly glorious liftoff, an Orbital Sciences Corp. commercial Antares rocket suffered a catastrophic failure and exploded into a spectacular aerial fireball over the launch pad at NASA’s Wallops Flight Facility on the eastern shore of Virginia that doomed the mission bound for the International Space Station on Tuesday, October 28.  Read more here: http://www.universetoday.com/115787/catastrophic-failure-dooms-antares-launch-to-space-station-gallery/

NASA WEB ·View of the sky around the multiple star system GG Tauri

View of the sky around the multiple star system GG Tauri

This wide-field view shows the sky around the young multiple star system GG Tauri, which appears very close to the centre of this picture. This view also shows a dust cloud and evidence of star formation near the top of the picture. This, like GG Tauri itself, is part of the Taurus Dark Cloud complex, one of the closest star-forming regions to Earth.
Credit:
ESO/Digitized Sky Survey 2. Acknowledgement: Davide De Martin

NASA WEB · Planet-forming Lifeline Discovered in a Binary Star System ALMA Examines Ezekiel-like “Wheel in a Wheel” of Dust and Gas

Planet-forming Lifeline Discovered in a Binary Star System

ALMA Examines Ezekiel-like “Wheel in a Wheel” of Dust and Gas

29 October 2014
For the first time, researchers using ALMA have detected a streamer of gas flowing from a massive outer disc toward the inner reaches of a binary star system. This never-before-seen feature may be responsible for sustaining a second, smaller disc of planet-forming material that otherwise would have disappeared long ago. Half of Sun-like stars are born in binary systems, meaning that these findings will have major consequences for the hunt for exoplanets. The results are published in the journal Nature on 30 October 2014.
A research group led by Anne Dutrey from the Laboratory of Astrophysics of Bordeaux, France and CNRS used theAtacama Large Millimeter/submillimeter Array (ALMA) to observe the distribution of dust and gas in a multiple-star system called GG Tau-A [1]. This object is only a few million years old and lies about 450 light-years from Earth in the constellation of Taurus (The Bull).
Like a wheel in a wheel, GG Tau-A contains a large, outer disc encircling the entire system as well as an inner disc around the main central star. This second inner disc has a mass roughly equivalent to that of Jupiter. Its presence has been an intriguing mystery for astronomers since it is losing material to its central star at a rate that should have depleted it long ago.
While observing these structures with ALMA, the team made the exciting discovery of gas clumps in the region between the two discs. The new observations suggest that material is being transferred from the outer to the inner disc, creating a sustaining lifeline between the two [2].
Material flowing through the cavity was predicted by computer simulations but has not been imaged before. Detecting these clumps indicates that material is moving between the discs, allowing one to feed off the other,” explains Dutrey. “These observations demonstrate that material from the outer disc can sustain the inner disc for a long time. This has major consequences for potential planet formation.”
Planets are born from the material left over from star birth. This is a slow process, meaning that an enduring disc is a prerequisite for planet formation. If the feeding process into the inner disc now seen with ALMA occurs in other multiple-star systems the findings introduce a vast number of new potential locations to find exoplanets in the future.
The first phase of exoplanet searches was directed at single-host stars like the Sun [3]. More recently it has been shown that a large fraction of giant planets orbit binary-star systems. Now, researchers have begun to take an even closer look and investigate the possibility of planets orbiting the individual stars of multiple-star systems. The new discovery supports the possible existence of such planets, giving exoplanet discoverers new happy hunting grounds.
Emmanuel Di Folco, co-author of the paper, concludes: “Almost half the Sun-like stars were born in binary systems. This means that we have found a mechanism to sustain planet formation that applies to a significant number of stars in the Milky Way. Our observations are a big step forward in truly understanding planet formation.

Notes

[1] GG Tau-A is part of a more complex multiple-star system called GG Tauri. Recent observations of GG Tau-A using the VLTI have revealed that one of the stars — GG Tau Ab, the one not surrounded by a disc — is itself a close binary, consisting of GG Tau-Ab1 and GG Tau-Ab2. This introduced a fifth component to the GG Tau system. 
[2] An earlier result with ALMA showed an example of a single star with material flowing inwards from the outer part of its disc.
[3] Because orbits in binary stars are more complex and less stable, it was believed that forming planets in these systems would be more challenging than around single stars.

More information

This research was presented in a paper entitled “Planet formation in the young, low-mass multiple stellar system GG Tau-A” by A. Dutrey et al., to appear in the journal Nature.
The team is composed of Anne Dutrey (University Bordeaux/CNRS, France), Emmanuel Di Folco (University Bordeaux/CNRS), Stephane Guilloteau (University Bordeaux/CNRS), Yann Boehler (University of Mexico, Michoacan, Mexico), Jeff Bary (Colgate University, Hamilton, USA), Tracy Beck (Space Telescope Science Institute, Baltimore, USA), Hervé Beust (IPAG, Grenoble, France), Edwige Chapillon (University Bordeaux/IRAM, France), Fredéric Gueth (IRAM, Saint Martin d’Hères, France), Jean-Marc Huré (University Bordeaux/CNRS), Arnaud Pierens (University Bordeaux/CNRS), Vincent Piétu (IRAM), Michal Simon (Stony Brook University, USA) and Ya-Wen Tang (Academia Sinica Institute of Astronomy and Astrophysics, Taipei, Taiwan).
The Atacama Large Millimeter/submillimeter Array (ALMA), an international astronomy facility, is a partnership of Europe, North America and East Asia in cooperation with the Republic of Chile. ALMA is funded in Europe by the European Southern Observatory (ESO), in North America by the U.S. National Science Foundation (NSF) in cooperation with the National Research Council of Canada (NRC) and the National Science Council of Taiwan (NSC) and in East Asia by the National Institutes of Natural Sciences (NINS) of Japan in cooperation with the Academia Sinica (AS) in Taiwan. ALMA construction and operations are led on behalf of Europe by ESO, on behalf of North America by the National Radio Astronomy Observatory (NRAO), which is managed by Associated Universities, Inc. (AUI) and on behalf of East Asia by the National Astronomical Observatory of Japan (NAOJ). The Joint ALMA Observatory (JAO) provides the unified leadership and management of the construction, commissioning and operation of ALMA.
ESO is the foremost intergovernmental astronomy organisation in Europe and the world’s most productive ground-based astronomical observatory by far. It is supported by 15 countries: Austria, Belgium, Brazil, the Czech Republic, Denmark, France, Finland, Germany, Italy, the Netherlands, Portugal, Spain, Sweden, Switzerland and the United Kingdom. ESO carries out an ambitious programme focused on the design, construction and operation of powerful ground-based observing facilities enabling astronomers to make important scientific discoveries. ESO also plays a leading role in promoting and organising cooperation in astronomical research. ESO operates three unique world-class observing sites in Chile: La Silla, Paranal and Chajnantor. At Paranal, ESO operates the Very Large Telescope, the world’s most advanced visible-light astronomical observatory and two survey telescopes. VISTA works in the infrared and is the world’s largest survey telescope and the VLT Survey Telescope is the largest telescope designed to exclusively survey the skies in visible light. ESO is the European partner of a revolutionary astronomical telescope ALMA, the largest astronomical project in existence. ESO is currently planning the 39-metre European Extremely Large optical/near-infrared Telescope, the E-ELT, which will become “the world’s biggest eye on the sky”.

sábado, 25 de outubro de 2014

NASA WEB · This Massive Sunshield Will Protect NASA's New Space Telescope When the sunshield for the James Webb Space Telescope underwent deployment testing, it unfolded exactly like it would in space. At least, it did if you ignore the people, cranes, air, warmth, gravity, and conspicuous absence of the rest of the telescope. Even so, it looks really cool, and provides a…

NASA WEB · A sneak peak at flight #JWST hardware at Northrop Grumman. Any guesses what this is? If you've been following us over the last month, you might have a pretty good idea!

A sneak peak at flight #JWST hardware at Northrop Grumman. Any guesses what this is? If you've been following us over the last month, you might have a pretty good idea!


Image credit: NASA/Chris Gunn

Foto: A sneak peak at flight #JWST hardware at Northrop Grumman.  Any guesses what this is? If you've been following us over the last month, you might have a pretty good idea!  You can find the answer here: http://go.nasa.gov/1uoZACI  Image credit: NASA/Chris Gunn

NASA WEB · For #techtuesday, here's a look back at the James Webb Space Telescope's flight instrument module being lowered in the giant vacuum chamber NASA Goddard at the beginning of the summer. It is being viewed from inside the Helium-cooled shroud that takes the module to its flight operating temperature of ~35-40K. The flight components are enclosed within the support structure, and thermal-control shroud is visible here. The instrument module doesn't have much longer to go til completion of this summer-long test. Credit: NASA/Chris Gunn

For #techtuesday, here's a look back at the James Webb Space Telescope's flight instrument module being lowered in the giant vacuum chamber NASA Goddard at the beginning of the summer. It is being viewed from inside the Helium-cooled shroud that takes the module to its flight operating temperature of ~35-40K. The flight components are enclosed within the support structure, and thermal-control shroud is visible here.

The instrument module doesn't have much longer to go til completion of this summer-long test.

Credit: NASA/Chris Gunn

Foto: For #techtuesday, here's a look back at the James Webb Space Telescope's flight instrument module being lowered in the giant vacuum chamber NASA Goddard  at the beginning of the summer. It is being viewed from inside the Helium-cooled shroud that takes the module to its flight operating temperature of ~35-40K. The flight components are enclosed within the support structure, and thermal-control shroud is visible here.   The instrument module doesn't have much longer to go til completion of this summer-long test.  Credit: NASA/Chris Gunn

NASA WEB ·A "NIRSpec-tacular View" of NASA's Webb Telescope Instrument - Image credit: NASA/Chris Gunn

A "NIRSpec-tacular View" of NASA's Webb Telescope Instrument -

Image credit: NASA/Chris Gunn

Foto: A "NIRSpec-tacular View" of NASA's Webb Telescope Instrument - read more: http://www.nasa.gov/content/goddard/a-nirspec-tacular-view-of-nasas-webb-telescope-instrument/#.U_37nUhVsuU  Image credit: NASA/Chris Gunn

NASA WEB ·Water clouds tentatively detected just 7 light-years from Earth They're the first water clouds ever seen beyond our solar system

NASA WEB · Space Very Long Baseline Interferometry The Space Very Long Baseline Interferometry is a network of space- and Earth-based radio antennas that combine to create the equivalent of a telescope with a diameter more than two-and-a-half times the diameter of Earth.

NASA WEB · Rosetta's Comet Scrambling Its Jets Rosetta's comet destination is beginning to show a clearly visible increase in activity.

NASA WEB · NASA Finds Methane Ice Cloud in Titan's Stratosphere NASA scientists have identified an unexpected ice cloud on Saturn's moon Titan that is similar to exotic clouds found far above Earth's poles.