YR4 has a 2% chance of hitting Earth in 2032. Astronomers are tracking it to refine estimates of its size and orbit to see how much of a risk the space rock poses.

Astronomers have detected a relatively close exoplanet orbiting in the habitable zone of its star, where temperatures are ...

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 [email protected]. Why do people use telescopes to look into space ...

Step aside, Darth Vader. National Aeronautics and Space Administration (NASA)'s Joint Extreme ultraviolet lithography (EUV) ...