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An 'square structure' recorded by the NASA's Mars Orbiter Camera in 2001 is currently going viral online - as many wonder what it could be.

"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 ...

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

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

In his prepared remarks, Trump, a longtime backer of U.S.-led space exploration and exploitation, singled out Mars and left ...

The northern plains of Mars, marked by thousands of mounds and hills, hold significant evidence of the planet's watery past.

Buttes and mesas in Mars' Chryse Planitia contain clay minerals made from liquid water interacting with the rock nearly 4 ...

During his inaugural address, President Donald Trump said he wants 'American astronauts' on Mars. Where does a future Mars ...

Scientists confirm the existence of liquid water on Mars, altering our understanding of the Red Planet. Evidence of wave ...

Living on Mars will be no easy feat. Building viable living quarters would require an inflatable habitat that can be covered ...

These two planets are visible in the southwest sky.Mars is currently at opposition from the Sun. That means the Sun and the ...