News tagged with supermassive black holes

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How fast can stars spin?

Everything in the universe is spinning. Spinning planets and their spinning moons orbit around spinning stars, which orbit spinning galaxies. It's spinning all the way down.

dateJul 12, 2016 in Astronomy
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Chance microlensing events probe galactic cores

Some galaxies pump out vast amounts of energy from a very small volume of space, typically not much bigger than our own solar system. The cores of these galaxies, so called Active Galactic Nuclei or AGNs, are often hundreds ...

dateJul 01, 2016 in Astronomy
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Dormant black hole eats star, becomes X-ray flashlight

Roughly 90 percent of the biggest black holes in the known universe are dormant, meaning that they are not actively devouring matter and, consequently, not giving off any light or other radiation. But sometimes a star wanders ...

dateJun 22, 2016 in Astronomy
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Astrophysicists probe theory of black-hole accretion

Utilizing the Atacama Large Millimeter/submillimeter Array (ALMA), one of the most powerful telescopes in the world, U.S. Naval Research Laboratory (NRL) astrophysicist Dr. Tracy Clarke and an international team of researchers ...

dateJun 22, 2016 in Astronomy
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