Every second, our planet is racing through space at tens of thousands of miles per hour, yet the air outside the window ...

The interstellar comet will pass safely by Earth, giving astronomers their best chance to study it up close. Interstellar ...

The interstellar comet known as 3I/Atlas will pass within 167 million miles of our planet Friday – the closest it gets on its ...

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

While the 21st century has been bumpy, it has also ushered in monumental scientific and technological breakthroughs that have ...

A stray comet from another star is swinging past Earth. Discovered over the summer, the comet known as 3I/Atlas will pass ...

Comet 3I/ATLAS will get closest to Earth on Dec. 19, and astronomers will be watching.