black hole
‘Light Echos’ Reveal Old, Bright Outbursts Near Milky Way’s Black Hole
How's that for a beacon? NASA's Chandra X-ray Observatory has tracked down evidence of at least a couple of past…
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Navigating the Cosmos by Quasar
50 million light-years away a quasar resides in the hub of galaxy NGC 4438, an incredibly bright source of light…
Supermassive Black Holes Keep Galaxies From Getting Bigger
It's long been a mystery for astronomers: why aren't galaxies bigger? What regulates their rates of star formation and keeps…
Our Galaxy’s Supermassive Black Hole is a Sloppy Eater
Like most galaxies, our Milky Way has a dark monster in its middle: an enormous black hole with the mass…
A Galaxy Grows Fat on Nearby Gas
If you live in the U.S. you may be enjoying a sultry summer day off in honor of Independence Day,…
Black Hole Bonanza! Dozens (Potentially) Found In Andromeda As Another Study Probes X-Rays
More than two DOZEN potential black holes have been found in the nearest galaxy to our own. As if that…
Milky Way’s Black Hole Munches On Supercooked Gas
It's a simple menu, but smoking hot. The black hole at the center of the Milky Way galaxy is sucking…
Galactic Gas Cloud Could Help Spot Hidden Black Holes
The heart of our Milky Way galaxy is an exotic place. It's swarming with gigantic stars, showered by lethal blasts…
Black Hole Jets Might Be Molded by Magnetism
Visible-light Hubble image of the jet emitted by the 3-billion-solar-mass black hole at the heart of galaxy M87 (Feb. 1998)…
“Oddball” Galaxy Contains the Biggest Black Hole Yet
Image of lenticular galaxy NGC 1277 taken with Hubble Space Telescope. (NASA/ESA/Andrew C. Fabian) It's thought that at the heart…