Stars are born in dense, cool clouds of molecular gas and dust. When the local density is high enough, the matter can gravitationally collapse to form a new star, a so-called young stellar object (YSO). In its early phases, ...
Astronomy
Dec 8, 2014
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(Phys.org) —Supernova remnants (SNRs) play a vital role in the lifecycle of dust in the interstellar medium. As shockwaves from supernovae sweep up interstellar material, they heat the gas and dust, and destroy a significant ...
Astronomy
Jun 27, 2014
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(Phys.org) —When the sun sets on a remote desert outpost and solar panels shut down, what energy source will provide power through the night? A battery, perhaps, or an old diesel generator? Perhaps something strange and ...
General Physics
Mar 3, 2014
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NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA) embarked on a "target of opportunity" flight recently that included study of Comet ISON. The lengthy mission was SOFIA's second opportunity to capture data on ...
Space Exploration
Nov 22, 2013
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3C 397 (also known as G41.1-0.3) is a Galactic supernova remnant with an unusual shape.
Astronomy
Nov 7, 2013
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Astronomers using NASA's Spitzer Space Telescope have observed what most likely are strong carbon dioxide emissions from Comet ISON ahead of its anticipated pass through the inner solar system later this year.
Space Exploration
Jul 24, 2013
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(Phys.org) —Inside the cleanrooms of NASA's Goddard Space Flight Center, the international James Webb Space Telescope (JWST) is beginning to take shape.
Space Exploration
Jul 9, 2013
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(Phys.org) —The contorted object captured by Hubble in this picture is IRAS 22491-1808, also known as the South America Galaxy. It is an ultra-luminous infrared galaxy (ULIRG) that emits a huge amount of light at infrared ...
Astronomy
Jun 17, 2013
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Photosynthesis—the harvesting of sunlight to produce energy—is the ultimate driver of virtually all life on the surface of our planet. Most photosynthetic creatures rely on optical light, the kind we see, to energize ...
Earth Sciences
Jun 7, 2013
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(Phys.org) —A new image from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument on NASA's Terra spacecraft shows the extent of destruction from the deadly Newcastle-Moore tornado that ...
Earth Sciences
Jun 6, 2013
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