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

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

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 ...

Bright white rocks spotted by NASA’s Perseverance rover are rewriting what we thought we knew about ancient Mars. These ...

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

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

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 ...

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

"The Chinese may well beat the U.S. with a grab sample." ...

On Jan. 18, 2004, the European Space Agency's Mars Express successfully mapped Mars' south pole, and, in a first, revealed ...