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

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

Long thought of as a dry, barren world, Mars may once have shimmered with shades of blue. A new study reveals the discovery of ancient river deltas on the Red Planet, offering the clearest evidence ...

MARS was not always the beaming red we’re so used to seeing in space. Scientists have revealed that it was actually a “blue planet” some 3billion years ago. The search for water ...

Mars had an Arctic-sized ocean, and scientists are only now beginning to see the outline of it. For a long time, the planet has been described as dry and stripped of anything familiar. Yet images ...