A primitive ocean on Mars held more water than Earth’s Arctic Ocean, and covered a greater portion of the planet’s surface than the Atlantic Ocean does on Earth, according to new results published ...

(CNN) — Data from a retired NASA mission has revealed evidence of an underground reservoir of water deep beneath the surface of Mars, according to new research. A team of scientists estimates that ...

PSI: A geologic mapping project using NASA spacecraft data offers new evidence that expansive lakes existed long ago on Mars. The research points to a series of sedimentary deposits consistent with ...

An international team of scientists who analyzed data from the Gamma Ray Spectrometer onboard NASA’s Mars Odyssey reports new evidence for the controversial idea that oceans once covered about a third ...

The sound of wind reveals details of Martian subsurface. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Researchers have created the first-ever ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Data from a retired ...