"In our solar system, the most massive moon is Ganymede, which is still extremely small compared to what we are inferring ...

Astronomers are testing a quieter way of searching for moons beyond the solar system, using careful measurements of motion ...

Add Yahoo as a preferred source to see more of our stories on Google. Some exoplanets, like the one shown in this illustration, may have atmospheres that could make them potentially suitable for life.

A new discovery suggests the possibility of an exomoon with an unprecedentedly large mass, thousands of times larger than any ...

(CNN) — After decades of searching, astronomers have uncovered some of the strongest evidence yet of exoplanets orbiting Barnard’s Star, the nearest single star system to Earth. The four planets are ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Morgan Underwood, Rice University (THE CONVERSATION) When astronomers search for ...