Will the Milky Way and Andromeda galaxies collide in several billion years? The odds have changed with a new study using ...

The Milky Way looks serene from our vantage point, a hazy river of light arcing across the night sky. Yet the stars that make ...

Black holes, born from dying stars, are cosmic giants that grow by consuming matter and merging with others. While invisible ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...