Explore the universe with news on fascinating discoveries, scientific advancements and more. Mars may have once hosted an ocean with waves that lapped against sandy beaches 3.6 billion years ago, ...

The Solar System's first-of-its-kind finding may be a 90% water planet. Is the dwarf planet, Ceres, holding the possibility ...

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 ...

"We found evidence for wind, waves, no shortage of sand—a proper, vacation-style beach," said geologist Benjamin Cardenas.

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 ...

The idea of an ancient Martian ocean has fascinated scientists for decades. Now, groundbreaking research based on radar scans ...

A study using radar data from China's now-dead Zhurong rover finds strong evidence that Mars had a stable ocean in the ancient past. Credit: Victor Habbick Visions / Science Photo Library / Getty ...

Step aside, Santa Monica. It seems that Mars once had beaches that would give the Californian coast a run for its money.

Many scientists think that Mars used to have an ocean that covered up to a third of the planet, but the theory is still debated. New data from China's Zhurong rover strengthens the case for an ...

This helped scientists to conclude that Mars once had a large ocean of liquid water - something the planet is far too cold to support today, where temperatures sit around -65 Celsius. The ocean ...

"It's like a game of billiards around the solar system, flying by a couple of planets at just the right angle and timing to ...