Oceans hiding within the crusts of distant moons are tantalizing targets for scientists looking for life beyond Earth ...

The giant planets weren't always where we find them today. Jupiter, Saturn, Uranus and Neptune formed in a more compact ...

The NASA-funded ATLAS survey telescope in Chile found the comet on July 1. The comet was not visible as it raced behind the ...

The comet—only the third known interstellar visitor to our solar system—will make its closest approach of the Earth this week ...

The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space ...

The Hubble Space Telescope and the Jupiter Icy Moons Explorer have captured fresh images of an interstellar comet as the ...

Voyager spacecraft flew farther than anything humans ever built and ran into something scientists didn’t expect at all. At ...

Before 3I/ATLAS, the only other confirmed interstellar tourists we've seen were the now-famous, cigar-shaped 'Oumuamua' in ...

Officially designated 3I/Atlas after its discovery this summer, the comet will make its closest approach to Earth this Friday ...

A new paper calculated a solar storm could bring down the planet's satellite system in just three days, wreaking havoc on ...

Astronomers are uncovering distant worlds beyond our solar system using ingenious indirect methods like observing stellar ...

The Sun exhibited unpredictable behavior with two strong solar flares in late November and early December 2025. These events, ...