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Astronomy News & Research
A faint "satellite galaxy" 10 billion light years from Earth is the lowest-mass object ever detected at such a distance, says UC Davis, physics professor Chris Fassnacht, who aided in the satellite's discovery.
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DARPA's Galileo program seeks to bridge the precision fiber optic controls and long-baseline astronomical interferometry technical communities to enable imaging of objects in GEO faster than is possible today.
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There are more exoplanets further away from their parent stars than originally thought, according to new astrophysics research.
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 | Lawrence Berkeley National Laboratory scientists and their colleagues in Sloan Digital Sky Survey III used visual data from nearly a million luminous galaxies for the most accurate calculation yet of how matter clumps together in the universe. By deriving cosmic rulers from an immense volume of sky, from a time when the universe was half its present age until now, the study establishes how much dark matter, dark energy, and even hard-to-detect neutrinos it contains. ...> Full Article |
 | NASA's Hubble Space Telescope has looked deep into the distant universe and detected the feeble glow of a star that exploded more than nine billion years ago. The sighting is the first finding of an ambitious survey that will help astronomers place better constraints on the nature of dark energy, the mysterious repulsive force that is causing the universe to fly apart ever faster. ...> Full Article |
 | The smallest exoplanets yet discovered orbit a dwarf star almost identical to Barnard's star, one of the sun's nearest neighbors. The similarity helped the astronomers calculate the size of the distant planets. ...> Full Article |
 | A M8.7 Solar Flare that Erupted on Jan 22nd, 2012 is has also produced an S3 Solar Radiation Storm. ...> Full Article |
LSU astronomers recently discovered the solution to a long-standing fundamental problem of astrophysics: what produces thermonuclear, or Type Ia, supernovae, which are tremendous explosions where the light is often brighter than a whole galaxy? LSU professor of physics and astronomy Bradley Schaefer and graduate student Ashley Pagnotta have proven that these supernova are caused by a pair of white dwarf stars. Their results will appear in the Jan. 12 issue of Nature.
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 | After more than three years in space, NASA's Fermi Gamma-ray Space Telescope is extending its view of the high-energy sky into a largely unexplored electromagnetic range. Today, the Fermi team announced its first census of energy sources in this new realm. ...> Full Article |
 | Six years of observations of millions of stars now show how common it is for stars to have planets in orbits around them. Using a method that is sensitive to planets that lie in a habitable zone around the host stars, astronomers, including members from the Niels Bohr Institute, have discovered that most of the Milky Way's 100 billion stars have planets that are very similar to the Earth-like planets in our own solar system. ...> Full Article |
Simultaneous radio and X-ray observations allow astronomers to calculate exact time when superfast "bullets" of material were ejected from the close vicinity of a black hole.
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 | The stars we see today weren't always as serene as they appear, floating alone in the dark of night. Most stars, likely including our sun, grew up in cosmic turmoil -- as illustrated in a new image from NASA's Spitzer Space Telescope. The image shows one of the most active and turbulent regions of star birth in our galaxy, a region called Cygnus X. ...> Full Article |
A team of astronomers in Pitt's Kenneth P. Dietrich School of Arts and Sciences announced today the most accurate determination yet of the color of the Milky Way Galaxy: “a very pure white, almost mirroring a fresh spring snowfall.”
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The supernova SN2011fe, first noticed in August 2011 a mere 11 hours after it exploded, was the closest Type Ia supernova in decades and allowed astronomers to narrow down the identity of the progenitor star to something in the white dwarf range. A chance observation only four hours after the explosion has now let UC Berkeley astronomers put even stronger limits on the star's size, cinching its identity as a carbon-oxygen white dwarf.
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 | A new Hubble Space Telescope image centers on the 100-million-solar-mass black hole at the hub of the neighboring spiral galaxy M31, or the Andromeda galaxy, the only galaxy outside the Milky Way visible to the naked eye and the only other giant galaxy in the local group. ...> Full Article |
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