Experts Baffled After a Star Vanished Strangely and Was Replaced by a Black Hole, 20 Times Greater in Mass For centuries, ...

The galaxy in question is the famous Andromeda Galaxy, also known as M31, which is the most distant object you can see with your naked eyes. If you’ve got a pair of binoculars you’ll get a ...

NASA has captured some of the most breathtaking images of the cosmos, offering a glimpse into the wonders of the universe.

called the Andromeda Nebula (after the constellation in which it was located). It was entry 31 in Charles Messier's 18th century catalog of interesting fuzzy objects, and is thus also called M31 ...

Light is a time machine: all we see, from stars to galaxies, shows the past. Expanding space stretches light, letting ...

Each week, Astronomy magazine Senior Editor Michael E. Bakich, a master at explaining how to observe, posts a podcast about three or more objects or events you can see in the sky.

I study stellar and gas dynamics near massive black holes, with applications to our Galactic center, the Andromeda (M31) nucleus and post-starburst galaxies. I'm also interested in the strange orbits ...