Mars may have been a prime vacation spot millions of years ago, according to a new study on its coastal deposits. The data came from China’s Zhurong rover, which landed on the Red Planet on May 14, ...

Mars – dusty, dry, and desert-clad – was once so rich in water it had not just lakes, but oceans, according to a new study. Observations using ground-penetrating radar have revealed underground ...

NASA's InSight lander may have ended its mission a year and a half ago, but data from the robot's seismograph has revealed what appears be an ocean's worth of liquid water trapped under Mars' surface.

Researchers just discovered evidence to suggest that Mars was once home to oceans and sandy beaches on the red planet, according to data published by the Proceedings of the National Academy of ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Mars may have once ...

Deep beneath the surface of Mars lies a large reservoir of liquid water, according to seismometer data from NASA’s retired InSight lander. The findings, published Aug. 12 in Proceedings of the ...

A hypothetical picture of Mars 3.6 billion years ago, when an ocean may have covered nearly half the planet. The blue areas show the depth of the ocean filled to the shoreline level of the ancient, ...

Illustration of the planet Mars covered in water in the past, when its atmosphere was thicker and warmer. Now scientists may have found an unground reservoir. Is there water on Mars? Scientists using ...

The good news is that there's a vast ocean of water under the surface of Mars – enough to cover the entire planet to a depth of a mile (1.6 km). The bad news is that this repository is so deep and ...