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

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

Learn what the first maps of the sun's atmospheric boundary reveal about solar wind and its escape into space.

After less than a year in orbit, the Southwest Research Institute-built PUNCH spacecraft have made major accomplishments, ...

"Ultimately, this work may help scientists better predict the impact of space weather across the solar system on longer ...

The cold and remote planets originally earned their label of "ice giants" to contrast their interiors from those of Jupiter ...

Our solar system didn't form by accident. This video explains the blueprint that created rocky worlds like Earth and Mars ...

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

After less than a year in orbit, the Southwest Research Institute-built PUNCH spacecraft have made major accomplishments, ...

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

The mystifying 3I/ATLAS interstellar comet is blazing toward Earth and will in a matter of days come as close to our planet ...

On December 19, the interstellar comet 3I/ATLAS will make its closest approach to Earth with NASA saying it poses no danger ...