Ancient shoreline features hint that water on Mars once formed a vast ocean.

Even though the Red Planet's atmosphere is thin, wind is still one of Mars' most relentless sculptors.

MAVEN was built to last in orbit until 2030 — that's not looking likely anymore.

Planets, stars, and star clusters, oh my!

The findings potentially solve the paradox of how liquid water seems to have persisted on Mars even when the climate grew too ...

Exploration advocates are pushing back against the planned cancellation of NASA's Mars sample return project, saying it could ...

"Without Mars, Earth's orbit would be missing major climate cycles. What would humans and other animals even look like if ...