Scientists may have just taken one of the biggest steps yet in the search for life beyond Earth. Meet K2 18 b, a distant ...

Add Yahoo as a preferred source to see more of our stories on Google. Tardigrades—a type of invertebrate also known as water ...

When a scientific controversy or breakthrough dominates headlines, press officers and journalists often quote a handful of ...

Steven Spielberg's claims that aliens have already visited Earth have drawn a mixed but pointed scientists' reaction this week ...

When astrobiologists are asked what aliens might look like, many now point not to distant galaxies but to some of the strangest ...

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.

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first ...