(PhysOrg.com) -- An ultra-luminous X-ray source (ULX) emits more radiation in the X-rays than do a million suns at all wavelengths. ULXs are rare: Most galaxies, including our own Milky Way, have none, and galaxies that do ...
Astronomy
Mar 19, 2012
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One of the strangest types of galaxies are those known as ring galaxies. Examples of these include Hoag’s Object (shown above), the Cartwheel Galaxy, and AM 0644-741. These unusual shapes are cause by a galactic collision ...
Astronomy
Jul 25, 2011
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(PhysOrg.com) -- Is this one galaxy or two? Astronomer Art Hoag first asked this question when he chanced upon this unusual extragalactic object.
Astronomy
Aug 27, 2010
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An international team of astrophysicists has just unveiled the most complete atlas of nuclear rings, enormous star-forming ring-shaped regions that circle certain galactic nuclei. The catalogue, published in the Monthly Notices ...
Astronomy
Apr 29, 2010
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It will be on board in 2012, when a Soyus-2 rocket carries an X-ray telescope into space to decode the nature of the universe's dark energy: an X-ray detector developed by the Max Planck Institute for Extraterrestrial Physics. ...
Astronomy
Mar 16, 2010
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