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

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.

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

Mars is absolutely dripping with evidence that the red planet was once a striking blue, complete with glistening lakes, ...

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

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

New findings from NASA's Perseverance rover have revealed evidence of wave-formed beaches and rocks altered by subsurface ...

Mars may have been a "blue planet" with an ocean the size of today's Arctic Ocean, a new study suggests.

MARS was not always the beaming red we’re so used to seeing in space. Scientists have revealed that it was actually a “blue ...

NASA's plans for Mars sample return are effectively cancelled as part of a bill approved by the U.S. Congress, ending efforts ...

ESA's first mission to another world, the Mars Express orbiter, began circling the Red Planet on June 2, 2003. Ever since, ...