NASA astronaut Nichole Ayers captured an electrifying image of a giant lightning "sprite" shooting up over Mexico and ...

The thick, mineral-rich layers of clay found on Mars suggest that the Red Planet harbored potentially life-hosting ...

"Past climates with surface and shallow-subsurface liquid water are recorded by Mars's sedimentary rocks, including strata in the approximately 4-kilometer-thick [circa 2.5 miles thick] record at Gale ...

In a groundbreaking revelation, NASA’s rover discoveries may change everything we thought we knew about thehistory of Mars.