Scientists find red blood cell-like structures in a dinosaur fossil, shedding light on cancer’s ancient origins.

NASA’s MAVEN finally sees sputtering—an escape process that stripped Mars of its atmosphere and ancient water.

I'm incredibly excited, as part of the Ars Live series, to host a conversation with some of the very best space reporters in ...

Scientists created the Mars rover's newest self-portrait by stitching together 59 individual images taken by Perseverance 's ...