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Cosmic slurp: Predicting black hole eating binges

Georgia Tech researchers use supercomputers to understand and predict signs of black holes swallowing stars Somewhere out in the cosmos an ordinary galaxy spins, seemingly...

The Search for Seeds of Black Holes

How do you grow a supermassive black hole that is a million to a billion times the mass of our sun? Astronomers do not...

Possible Sighting of Massive Black Hole Duo

Astronomers have spotted what appear to be two supermassive black holes at the heart of a remote galaxy, circling each other like dance partners....

Swift survey finds ‘missing’ active galaxies

Seen in X-rays, the entire sky is aglow. Even far away from bright sources, X-rays originating from beyond our galaxy provide a steady glow in every direction. Astronomers have long suspected that the chief contributors to this cosmic X-ray ba...

Case for Massive Black Hole Strengthened

UCLA astronomer Andrea Ghez announced more than four years ago that a monstrous black hole resides at the center of our Milky Way galaxy, 24,000 light years away, with a mass more than 2 million times that of our sun. Some astronomers greeted the announcement with skepticism, and proposed exotic forms of matter as alternatives. At the American Association for the Advancement of Science meeting Feb. 16 in Denver, Ghez reported that the case for the black hole has been strengthened substantially, and that all of the proposed alternatives can be excluded.

Milky Way monster stars in cosmic reality show

The longest X-ray look yet at the supermassive black hole at the Milky Way's center has given astronomers unprecedented access to its life and times. The new data from NASA's Chandra X-ray Observatory revealed that our galaxy's central black hole is a frequent bad actor, prone to numerous outbursts and occasional large explosions.

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