Black Holes

Pushy Black Holes Stop Elliptical Galaxies From Forming Stars

by Elizabeth Howell February 25, 2014

Want to stay on top of all the space news? Follow @universetoday on Twitter Contradicting past theories, cold gas has been found in abundance in some elliptical galaxies — showing that there must be some other explanation why these types of galaxies don’t form new stars. Astronomers believe that the jets from supermassive black holes […]

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Dense Gas Clouds Blot The View Of Supermassive Black Holes

by Elizabeth Howell February 20, 2014

Gas around supermassive black holes tends to clump into immense clouds, periodically blocking the view of these huge X-ray sources from Earth, new research reveals. Observations of 55 of these “galactic nuclei” revealed at least a dozen times when an X-ray source dimmed for a time as short as a few hours or as long […]

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Planck “Star” to Arise From Black Holes?

by Brian Koberlein February 10, 2014

A new paper has been posted on the arxiv (a repository of research preprints) introducing the idea of a Planck star arising from a black hole.  These hypothetical objects wouldn’t be a star in the traditional sense, but rather the light emitted when a black hole dies at the hands of Hawking radiation.  The paper hasn’t […]

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Black Holes Warmed Up Space Slower Than Previously Thought: Study

by Elizabeth Howell February 6, 2014

Black holes are big influencers for the early universe; these singularities that were close to ancient stars heated up gas and affected star formation across the cosmos. A new study, however, says that heating happened later than previously thought. Remove this ad Elizabeth Howell on Google+

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Why Hawking is Wrong About Black Holes

by Brian Koberlein February 1, 2014

A recent paper by Stephen Hawking has created quite a stir, even leading Nature News to declare there are no black holes. As I wrote in an earlier post, that isn’t quite what Hawking claimed.  But it is now clear that Hawking’s claim about black holes is wrong because the paradox he tries to address isn’t a paradox […]

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