The organic molecules could come from life or from ordinary chemistry — only samples returned to Earth can settle it.

The Exploration Rover for Navigating Extreme Sloped Terrain (ERNEST) test rover has been put through its paces with great ...

NASA's Perseverance rover has uncovered one of the most intriguing clues yet in humanity's search for life beyond Earth.

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.

NASA's Perseverance rover has spotted an oddball rock in an ancient river channel on Mars. Deputy project scientist Katie ...

NASA wants to send an ambitious fleet of helicopters to soar through Martian skies—but scientists fear the endeavor could ...

A NASA‑linked study argues that alien probes could already be in our Solar System, but our surveys are still too crude to ...

Even at this early stage in our spacefaring age, humanity has already begun sending probes that will eventually reach other ...

Seven organic molecules that have never been seen before on Mars just turned up inside a single rock — and one is a precursor ...

For generations, the search for life beyond Earth has focused on avoiding one of science’s biggest mistakes: claiming a ...

Steven Spielberg looks to skies for redemption in this spiritual sequel to Close Encounters of the Third Kind.v ...