In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...

Astronomers have watched a massive star vanish in the night sky, only to be replaced by a black hole. The supergiant star M31-2014-DS1, which has a mass 20 times greater than the sun and is ...

let's try for one of the sky's most distant naked-eye wonders: the Andromeda Galaxy (M31) in the constellation Andromeda. This huge spiral galaxy is larger than the Milky Way and sits some 2.5 ...

The Andromeda nebula, M31, was a prominent example. It's visible to the naked eye from a dark site. The Andromeda galaxy, then known as the Andromeda nebula, is a bright spot in the sky that ...

However, any pair of binoculars will help you pick-out M31 rather easily from underneath any kind of urban sky. So here’s how you do it—by finding the halfway point between two bright stars ...

Jamie Carter is an award-winning reporter who covers the night sky. A new study claims to have ... very large and very close galaxy. Also called M31—and our closest giant neighboring galaxy ...

The Andromeda Galaxy, also known as Messier 31 or M31, is a barred spiral galaxy similar ... apparent diameter of the full Moon in the night sky. The southern region of the Andromeda Galaxy ...