Scientists Suggest That Mars Was Warm and Held Water Billions of Years Ago, Much More Like Earth in the Past Researchers have ...

"It's been such a puzzle that there was liquid water on Mars, because Mars is further from the sun, and also, the sun was ...

The image below, taken by the European Space Agency's Trace Gas Orbiter (which arrived at Mars in 2016), shows one of the ...

The fact that the cold, dry Mars of today had flowing rivers and lakes several billion years ago has puzzled scientists for ...

NASA's Rover found ripples in Martian rock that resemble the wave patterns on a sandy lake bed on Earth. The ripples could ...

Some of Mars’ CO2 geysers erupt and create dark spots as large as 1 km across. They are fueled by considerable power and can ...

Mars' southern hemisphere absorbs a lot of the sun's energy during the Red Planet's spring, and that may be causing Mars' ...

The car-sized Curiosity rover has spotted evidence of once quite hospitable environs on Mars.

What can sand dunes on Earth and Mars teach us about the latter’s wind behavior and atmosphere? This is what a recently ...

During the fluctuations between warm and cold climates, the chemistry of Mars' atmosphere was also fluctuating. CO2 is constantly hit by sunlight and converted to CO. In warm periods, the CO could ...