Andromeda XXXV contains an estimated 20,000 Suns worth of stars and lies about half a million light-years from the center of ...

Hubble reveals a markedly different ecosystem from the smaller number of satellite galaxies that circle our Milky Way. This ...

Right now, the Andromeda galaxy is racing toward the Milky Way at a speed of 250,000 mph - fast enough to circle the world in just six minutes. And it's scheduled to collide, head-on, with the ...

Then, they pieced together a record of the X-ray light produced by a supermassive black hole in the Andromeda galaxy called M31 star or M31*. Their research provides insight into the unique ...