Data collected by NASA's InSight lander suggest that ancient internal processes are responsible for the "Martian dichotomy" ...

A new paper released today documents the first soil, airfall dust, and rock fragment samples collected by NASA for return ...

The rover's 26th sample, known as "Silver Mountain," has textures "unlike anything we've seen before," NASA says.

Mars will appear to make an ultraclose approach to the moon on Sunday, after Jupiter had a turn earlier this week. Here's how to get the best view of the rare conjunction.

NASA highlights some of the discoveries it has made on the Red Planet. Credit: NASA/JPL-Caltech ...