In a groundbreaking discovery, astronomers recently identified a smiley-face-shaped structure on Mars that may offer new clues about the Red Planet's ancient climate and the potential for life.

Wouldn’t you be happy too? The European Space Agency has found a “smiley” face on the surface of Mars — and the joy-sparking pattern could be a sign of life on the bright red dot. The purplish hue, ...

On Sept. 7, the ESA took to Instagram to share multiple views of the smiley face made up of ancient chloride salt deposits that form a mouth-like curve alongside two meteor impact craters that ...

Newly released images of Mars reveal a "smiley" salt deposit on the Red Planet's surface. A related study suggests that similar deposits, which were left behind from ancient lakes, may be a good place ...