Add Yahoo as a preferred source to see more of our stories on Google. An illustration of the exoplanet K2-18b, which some research suggests may be covered by deep oceans. NASA, ESA, CSA, Joseph ...

How can liquid water exist on ocean worlds enclosed by icy shells? This is what a recent study published in Nature Communications hopes to address as a team of researchers led by Texas A&M University ...

The unresolved question of whether life exists on other planets continues to spark curiosity from the public and the interest of scientists — but one Catholic physicist working on missions to search ...

This may be the most difficult question to answer. Life itself is not detectable with existing technology. Astronomers will need to evaluate and exclude all other potential options to build their ...