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

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

Using images from cameras on Mars orbiters, an international research team has discovered structures on Mars that are very ...

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

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Mars, the red planet, could be in for a global display of ...