"The structures that we were able to identify in the images are clearly the mouth of a river into an ocean." The post ...

The surface of Mars looks like an empty red wasteland. But if you look a bit closer, the remnants of an ancient alien civilization begin to take shape. At least, that's the conclusion of George J.

New evidence of ancient rivers suggests Mars may have been a "blue planet," thanks to an ocean spanning its entire northern ...

Giant, dense structures have been detected deep beneath thesurface of Mars, stirring both curiosity and excitement among planetary scientists. These hidden masses could reshape our understanding of ...

Mars has a clear structure in its mantel, and its crust includes distinct reservoirs, scientists have said. Those are the findings from meteorites that originated 1.3 billion years ago on the red ...

Mars, the planet we see today—arid, cold, and covered in red dust—may have once been a "blue planet" with a vast ocean that ...

Mars is known for its barren desert landscape and dry climate. But two recent studies in the journals Nature and Science go beneath the surface,... The core of Mars looks like Earth’s. What makes the ...

It's time now for our science news roundup from Short Wave, NPR's science podcast. I am joined by the show's two hosts, Regina Barber and Emily Kwong. Hi, y'all. EMILY KWONG, BYLINE: Hi. REGINA BARBER ...