Jezero Crater on Mars was once home to a lake, delta and rivers. See an animation of what it could have looked like when water poured into the crater billions of years ago and present day. Credit: ...

NASA has created a flyover animation of an impact crater on Mars that was captured using the Mars Reconnaissance Orbiter's High-Resolution Imaging Science Experiment (HiRISE) camera. Credit: NASA/JPL- ...

A sample collected by NASA’s Perseverance Mars rover from a dry riverbed in Jezero Crater could preserve evidence of ancient microbial life.

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