sgr a

Best Evidence Yet for a High-Energy Jet Emanating from the Milky Way’s Black Hole

by Nancy Atkinson November 20, 2013

Want to stay on top of all the space news? Follow @universetoday on Twitter Jets of high energy particles emanating from a black hole have been detected plenty of times before, but in other galaxies, that is — not from the supermassive black hole at the center of the Milky Way, known as Sagittarius A* […]

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Sgr A* Could Be a Relic of a Powerful AGN

by Shannon Hall November 13, 2013

The early universe was sizzling with active galactic nuclei (AGN) — intensely luminous cores powered by supermassive black holes — most of which could outshine their entire host galaxies and be seen across the observable universe. While our central supermassive black hole Sgr A* lies rather dormant at the moment, new evidence suggests that it too […]

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Our Galaxy’s Supermassive Black Hole is a Sloppy Eater

by Jason Major August 29, 2013

Like most galaxies, our Milky Way has a dark monster in its middle: an enormous black hole with the mass of 4 million Suns inexorably dragging in anything that comes near. But even at this scale, a supermassive black hole like Sgr A* doesn’t actually consume everything that it gets its gravitational claws on — […]

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How do Hypervelocity Stars End up Breaking The Speed Limit?

by Shannon Hall June 4, 2013

The Sun is racing through the Galaxy at a speed that is 30 times greater than a space shuttle in orbit (clocking in at 220 km/s with respect to the galactic center). Most stars within the Milky Way travel at a relatively similar speed. But certain stars are definitely breaking the stellar speed limit. About […]

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Galactic Gas Cloud Could Help Spot Hidden Black Holes

by Jason Major February 15, 2013

The heart of our Milky Way galaxy is an exotic place. It’s swarming with gigantic stars, showered by lethal blasts of high-energy radiation and a veritable cul-de-sac for the most enigmatic stellar corpses known to science: black holes. And at the center of the whole mélange is the granddaddy of all the black holes in […]

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