A new study suggests that when our star becomes unstable in 5 billion years or so, Earth may avoid being engulfed by its ...

Fourth of July celebrations across the United States this weekend could be accompanied by light shows in the night skies, as ...

Launched in 2004, Nasa’s Swift Observatory is sinking faster than ever because of recent solar storms.

A three-armed spacecraft rocketed into orbit Friday and is on course to reach NASA’s Swift Observatory in about a month.

A new AI-powered framework could transform how astronomers measure the expansion of the Universe. By analyzing images of Type Ia supernovae and modeling their environments in unprecedented detail, ...

The outer solar system once seemed like a quiet backwater. But a glut of tiny, strange moons with unruly orbits are coming into view, revealing hints of a surprising past – and the origin of Saturn's ...

Swift has been circling Earth for 21 years. Without a rescue mission assembled in just nine months, it would burn up by ...

Informed by science from the Smithsonian Astrophysical Observatory and astronomers worldwide, this “documentary that you can walk through” visualizes the cosmos in a 3-D introduction to the universe ...

A star could be about to become visible in the night sky in a once-every-80-years explosion. Here’s how to easily find T ...

NASA’s new 2026 eclipse map shows totality across Greenland, Iceland and Spain — and a partial solar eclipse for parts of ...