Recently, the Hubble Space Telescope captured a before-and-after image of a star exploding brightly. With the images one year apart, the contrast shows how bright a supernova is, and how that ...

A newly discovered impact craters on Mars, captured in striking detail by NASA’s Mars Reconnaissance Orbiter. The image, ...

Astronomers tracked a gamma-ray burst lasting over 7 hours, unseen in visible light, from a dusty galaxy 8 billion light-years away, challenging existing models and raising new questions for science.

A space explosion detected this summer burned for days on end, making it the longest and most unusual gamma-ray burst ever seen. Gamma-ray bursts are the universe’s most powerful explosions. They ...

NASA has created an animation to show what likely happened on July 2nd after a black hole appeared to shred a star. For months, space scientists scratched their heads and crunched the data. Then on ...

The space agency said supernovas typically brighten rapidly over a period of several weeks before they slowly start to dim. This example, however, took months to ...