(Phys.org) —ltra-luminous infrared galaxies ((ULIRGs) are galaxies whose luminosity exceeds that of a trillion suns, By way of comparison, our Milky Way galaxy has a typical modest luminosity of only about ten billion suns. ...
Astronomy
Jun 27, 2014
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(Phys.org) —Nearly 100 years since Albert Einstein developed general relativity, the theory has passed its toughest test yet in explaining the properties of observable Universe. The most precise measurements to date of ...
Astronomy
Jun 25, 2014
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(Phys.org) —The NASA/ESA Hubble Space Telescope has produced this vivid image of a pair of interacting galaxies known as Arp 142. When two galaxies stray too close to each other they begin to interact, causing spectacular ...
Astronomy
Jun 20, 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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(Phys.org) —When we look into the distant cosmos, the great majority of the objects we see are galaxies: immense gatherings of stars, planets, gas, dust, and dark matter, showing up in all kind of shapes. This Hubble picture ...
Astronomy
May 13, 2013
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(Phys.org)—Almost thirty years ago the Infrared Astronomy Satellite, IRAS, discovered that the universe contained many fabulously luminous galaxies, some of them more than a thousand times brighter than our own galaxy, ...
Astronomy
Oct 8, 2012
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(Phys.org) -- Relatively few galaxies possess the sweeping, luminous spiral arms or brightly glowing center of our home galaxy the Milky Way. In fact, most of the Universe's galaxies look like small, amorphous clouds of vapor. ...
Astronomy
Jul 2, 2012
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(PhysOrg.com) -- This composite image shows the central region of the spiral galaxy NGC 4151. X-rays (blue) from the Chandra X-ray Observatory are combined with optical data (yellow) showing positively charged hydrogen (H ...
Astronomy
Dec 28, 2011
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(PhysOrg.com) -- In celebration of the 21st anniversary of the Hubble Space Telescope’s deployment into space, astronomers pointed Hubble at an especially photogenic group of interacting galaxies called Arp 273.
Astronomy
Apr 20, 2011
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(PhysOrg.com) -- Spiral galaxy NGC 4151 is dubbed the "Eye of Sauron" for its similarity to the malevolent eye in "The Lord of the Rings."
Astronomy
Mar 11, 2011
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