Scientists previously predicted the pair of galaxies would merge in about five billion years. Now, research suggests that ...

A collision between the Milky Way and neighboring galaxy Andromeda is far from a sure thing; in fact, it could hinge on the flip of a cosmic coin.

One possibility, often overlooked, is that dark matter particles could be very light, with masses of just a few million electronvolts, far lighter than a proton, and still play a cosmic role.

Our universe is thought to be about 13.8 billion years old, meaning the Milky Way would have formed during the first billion years of existence as we know it.

Both the Milky Way and the Andromeda galaxies (M31) are part of what's known as the Local Group (LG), which also hosts other ...

It turns out that looming collision between our Milky Way and Andromeda galaxies might not happen after all. Astronomers reported Monday that the probability of the two spiral galaxies colliding ...

Infrared images show a red giant star, located 30,000 light years away near the center of the Milky Way. The star faded away and then reappeared over the course of several years. Philip Lucas ...

A decade-long survey of the night sky has revealed a mysterious new type of star astronomers are referring to as an “old smoker.” These previously hidden stellar objects are aging, giant stars ...