Black Holes

How did Supermassive Black Holes Grow so Massive so Quickly?

by Shannon Hall August 12, 2014

Want to stay on top of all the space news? Follow @universetoday on Twitter Black holes one billion times the Sun’s mass or more lie at the heart of many galaxies, driving their evolution. Although common today, evidence of supermassive black holes existing since the infancy of the Universe, one billion years or so after […]

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Three Supermassive Black Holes Tango in a Distant Galaxy, Marking a Huge Discovery

by Shannon Hall June 25, 2014

In a galaxy four billion light-years away, three supermassive black holes are locked in a whirling embrace. It’s the tightest trio of black holes known to date and even suggests that these closely packed systems are more common than previously thought. “What remains extraordinary to me is that these black holes, which are at the […]

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How Much of the Universe is Black Holes?

by Fraser Cain June 16, 2014

We all fear black holes, but how many of them are there out there, really? Between the stellar mass black holes and the supermassive ones, just how much of our Universe is black holes? There are two kinds of black holes in the Universe that we know of: There’s stellar mass black holes, formed from […]

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How Fast Do Black Holes Spin?

by Fraser Cain February 13, 2014

There is nothing in the Universe more awe inspiring or mysterious than a black hole. Because of their massive gravity and ability to absorb even light, they defy our attempts to understand them. All their secrets hide behind the veil of the event horizon. What do they look like? We don’t know. They absorb all […]

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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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