Scientists make discovery on Mars that could reveal alien life

Researchers have identified an 1,800-mile-wide plain in the northern hemisphere of Mars that may currently host alien life. Microbial life could, in theory, lurk beneath the plain's surface.

Scientists make discovery on Mars that could reveal alien life
Researchers have identified an 1,800-mile-wide plain in the northern hemisphere of Mars that may currently host alien life. Microbial life could, in theory, lurk beneath the plain's surface.