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

Mars Perseverance rover found hundreds of complex carbon signatures in Jezero Crater mudstones - compelling evidence, but not ...

An instrument on the Perseverance rover has identified large, complex carbon compounds alongside unusual patterns on the ...

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

A Stanford scientist's model suggests many small rocky planets can't sustain atmospheres, potentially explaining the scarcity ...

A new exoplanet model screens rocky worlds by their ability to retain atmospheres over geologic timescales, helping narrow ...

Deep beneath the Atlantic, an alien-like lost city of towering chimneys offers clues to life on Earth and other worlds.

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.

Bill Harwood has been covering the U.S. space program full-time since 1984, first as Cape Canaveral bureau chief for United Press International and now as a consultant for CBS News. On Wednesday, ...