The plot is about a Mars sample return mission ... consultant for the new Sony Pictures film. And to answer some of those "what if?" questions on aliens, we spoke to Catharine A.

Scientists have made a discovery about Mars that could lead to uncovering alien life. They identified an 1,800-mile-wide plain in the northern hemisphere that has the right subsurface ...

Scientists have identified a region on Mars that could support living organisms ... team had reportedly happened across the potential alien oasis after investigating possible locations with ...

"Like," Reeves mused in her application video for a one-way trip to Mars, "What if it's slow?" Aliens, on the hand, aren't that big of a concern for Reeves, who claims to have seen one before.

The Mars meteorite 'Black Beauty' suggests there used to be hot water on the Red Planet. Scientists have found what seems to be the oldest direct evidence of hot water flowing on Mars during its ...

Elon Musk unveiled SpaceX's plan on Tuesday for humans to colonize Mars by 2022 ... If we do find alien life, NASA wants to make sure it's actually alien, and not some Earthling (likely bacteria ...

If proven correct, this research could not only confirm the existence of alien life on Mars but also provide indirect evidence that methane in Mars' atmosphere may have a biological origin.