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

A "House of Cards" is a wonderful English phrase that it seems is now primarily associated with a Netflix political drama.

Discovered over the summer, the comet known as 3I/Atlas will pass within 167 million miles of our planet on Friday. That's as ...

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

One of the oldest unsolved riddles in planetary science concerns the origin of the moon. Over a century ago, George Darwin ...

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

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

An ultra-hot rocky exoplanet may be wrapped in a dense atmosphere, defying expectations about what small planets can sustain.

A rare interstellar visitor, comet 3I/ATLAS, is drawing attention as it approaches Earth, growing brighter and taking on a ...