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

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

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.

A NASA astronaut preparing for a grueling eight-month stint in orbit reveals a plan to test for extraterrestrial life.

Scientists say extraterrestrial life may exist elsewhere in the universe, but vast distances, enormous energy requirements ...

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

I was, therefore, intrigued by a recent report about grave goods containing a mysterious yellow glass found in 1922 in the ...

Science fiction has thrived in literature over the last half a century, thanks to masterpieces like Hyperion and The ...

Discover six hard sci-fi films where science shapes story and emotion, like Europa Report and The Martian. Brainy, emotional, ...

The surprising discovery of mysterious blobs inside our cells is revolutionising our understanding of how life works, and how ...

Some of the best movie adaptations of books take major liberties with the source material, but these endings couldn't be more ...