chandra x-ray observatory
Astronomers watch the galactic equivalent of a dog with a bone.
Astronomers say the ribbon-like structure is more than twice as long as our home galaxy is wide.
This galaxy, nicknamed the "Whirlpool," is a spiral galaxy, like our Milky Way, located about 30 million light years from
(Story continues below image.) Spiral galaxies NGC 2207 and IC 2163. The photo is a composite image of the spiral galaxies
The combination of data from multiple telescopes revealed that the swirling arms of Messier 106 are streams of shock waves
In 2012, Bulbul and her colleagues examined data collected by NASA's Chandra X-Ray Observatory on the Perseus Cluster, an
In fact, dark matter is thought to make up more than 80 percent of all matter in the universe. But scientists don't know
The distant supermassive black hole would ordinarily be too faint to measure, but a rare lineup with a massive elliptical
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