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

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

Though it's a cold, dead planet, Mars still has its own natural beauty about it. This image shows us something we'll never ...

The Mars Express orbiter launched to the Red Planet. Twenty years later, ESA has delivered a high resolution color image of Mars along with a time-lapse of "webcam" images that were released in near ...

Earth is home to some truly bizarre and breathtaking landscapes — here are 20 that look straight out of an alien world.

NASA's achievements, from the iconic Apollo missions to the James Webb Telescope, have redefined space exploration and ...

Thousands of mysterious clay mounds found on Mars were formed by ancient water on the Red Planet's barren northern plains, ...

Images of Mars taken from orbit show thousands of mounds in a region sculpted by water billions of years ago. A robotic ...

McNeil and his team used images collected by the orbiters ... or tremors from within Mars, detected by the now-retired NASA InSight mission point to convection within the Martian subsurface ...

Artificial intelligence is making a huge splash now, but NASA saw its potential long ago. Here are four ways AI is helping the U.S. explore space.

There is already water on Mars, but it is in the form of ice and mixed with carbon dioxide. According to NASA, they are ...