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

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

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

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

Harvard physicist Avi Loeb raises concerns as interstellar object 3I/ATLAS makes its closest pass to Earth later this month.

A vast ring of rocky leftovers between Mars and Jupiter, the asteroid belt preserves clues to how the planets — and Earth ...