A new Mars Rover image captured by NASA's Curiosity mission has reignited debate over whether unusual formations on the Red ...

The NASA Opportunity Rover has once again sparked fascination after one of its older images resurfaced online, reigniting speculation about unusual objects scattered across the surface of Mars. While ...

Space science has a long tradition of bold claims followed by even bolder scrutiny. Some of the most headline-grabbing ...

Our weekly roundup of the latest science in the news, as well as a few fascinating articles to keep you entertained over the ...

Beneath the icy silence of Antarctica's famous Dry Valleys lies a world so unusual that it often resembles another planet. Invisible to the naked eye, microscopic organisms survive in some of the ...

A new survey of hundreds of astrobiologists reveals that, despite NASA's high-profile declarations about Mars and exoplanet K2-18b, most experts do not yet think alien life has probably been found.

By studying Earth's toughest microbes and complex animal "speech", scientists are reshaping how we search for – and may someday talk to – alien life.

The imaginary constructions of science fiction fill us with awe at their alien vastness. Which have you explored, and what was the most overwhelming?