Astronomers are celebrating the completion of a 2.5-billion-pixel panoramic picture of the entire Andromeda galaxy. The team includes several UC Santa Cruz researchers who made significant ...

Add Yahoo as a preferred source to see more of our stories on Google. A bright, fuzzy dot can be seen among a background of stars, leaving a wispy trail behind it. An explosive, green comet racing ...

Astronomers are celebrating the completion of a 2.5-billion-pixel panoramic picture of the entire Andromeda Galaxy. The team includes several UC Santa Cruz researchers who made significant ...

In about 4.5 billion years the Milky Way will smash into the Andromeda Galaxy in an event already dubbed the Andromeda-Milky Way collision. Astronomers are still attempting to predict what it will be ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A collision between ...