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

Even the best telescopes can’t see exoplanets. It’s all about watching for jiggly stars, blue shifts, and transits.

A new explanation for the solar system's radioactive elements suggests Earth-like planets might be found orbiting up to 50 ...

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

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

Gigantic US Spy Plane Lands on a US Aircraft Carrier Australian immigrant who tackled gunman 'riddled with bullets,' but ...

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

This is the story of our cosmic neighborhood's front row. We explore the four rocky planets forged in the sun's heat: ...

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

Interstellar comet 3I/ATLAS is now emitting a distinct green glow as it nears Earth, a transformation attributed to the ...

A few weeks ago, Electrek readers took to the comments to share their own real-world solar numbers. Here are some of the best ...

This week marks the last chance for backyard astronomers to see interstellar Comet 3I/ATLAS before it races on its journey ...