The Solar System is a fascinating place, with each planet orbiting the Sun at its own unique distance. But how far apart are ...

SYFY ’s The Ark follows the crew of an interstellar spacecraft on a multi-light-year journey to the star next door. In the ...

We’ve never known why sunspots can last on our star’s surface for as long as they do, but we finally cracked the case.

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's not aliens.) ...

Researchers suspect that two meteorites found in the Sahara Desert in 2023 may originally have come from Mercury, which would ...