The strongest hints yet that Mars once hosted living microbes are no longer theoretical models or ambiguous chemistry. They are etched into a single, oddly speckled rock in an ancient riverbed, where ...

“The presence of liquid water [on Mars] is a broad topic that includes rains, rivers, lakes, as well as oceans,” says Ezat ...

It would really suck to be all alone on Mars at night. The post This Photo of Mars at Night Is Straight Up Haunting appeared ...

New evidence of ancient rivers suggests Mars may have been a "blue planet," thanks to an ocean spanning its entire northern ...

The discovery suggests that parts of Mars may once have supported tropical-like climates, complete with heavy, sustained rainfall.

Decades of exploration have transformed our understanding of Mars, from Viking landers to the rovers Perseverance and ...

NASA's plans for Mars sample return are effectively cancelled as part of a bill approved by the U.S. Congress, ending efforts to collect Perseverance rover samples that could contain evidence of alien ...

This doesn’t mean Mars causes ice ages on its own. Orbital cycles are only part of the picture. Earth’s oceans, atmosphere, ...

A pull in the right direction ...

Bright white rocks found by NASA’s Perseverance rover hint at ancient Martian rain lasting millions of years, raising new questions about how wet Mars once was and what those conditions might mean.

A new study has examined how future human missions to Mars could access one of the planet's most vital resources—water. The ...

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