At half the size of Earth and one-tenth its mass, Mars is a featherweight as far as planets go. Yet new research reveals the ...

Tiny bits of Earth’s atmosphere have been drifting to the moon for billions of years, guided by Earth’s magnetic field.

Here's how the astronomical phenomenon influences our planet—from the length of our seasons to the way Earth moves through ...

Grab-and-go missions to asteroids have provided some of the most scientifically valuable samples since the Apollo ...

Scientists say Earth’s magnetic field may have funneled atmospheric particles to the moon for billions of years. Lunar soil could preserve a record of Earth’s past while providing resources for future ...