NASA's Perseverance rover has spotted an oddball rock in an ancient river channel on Mars. Deputy project scientist Katie Stack Morgan explains. Credit: NASA/JPL-Caltech/ASU/MSSS ...

Mars' alternating warm and cold periods may have influenced its ability to retain liquid water, potentially impacting life.

CAPE CANAVERAL, Fla. (AP) — New research finds an ancient asteroid strike carved out two grand canyons on the moon's far side. The samples collected by the Perseverance rover could shed light on the ...