The Andromeda galaxy is surrounded by a constellation of dwarf galaxies that are arranged in a highly lopsided manner.

Before our minds start to reel at these scales, let's return to the Andromeda Galaxy and examine it from our vantage point on the dust-grain planet we call Earth. The remarkable thing is that the ...

Right now, the Andromeda galaxy is racing toward the Milky Way ... The picture below is what the sky would look like on Earth if it the planet was around to see the end of the galaxy war: The ...

planet, or moon, usually mediated by a rotating disk. Active galaxy—A galaxy with an unusually strong output of energy, thought to be powered by a supermassive black hole in its core. Andromeda ...

Yet the very same objects that gave this planet life could also spell its ... put us on a collision course with our neighboring galaxy, Andromeda. Recent observations confirm that Andromeda ...

The cluster, full of more than 2,500 newborn stars that blaze blue in the Hubble image, is in a galaxy with far fewer heavy chemical substances than the Milky Way. It's mostly made of hydrogen and ...

Astronomers at the University of Michigan have discovered a new satellite of the Andromeda Galaxy (M31), the Milky Way’s closest major galactic neighbor, and it has broken the record for the ...