A new discovery suggests the possibility of an exomoon with an unprecedentedly large mass, thousands of times larger than any ...
Astronomers are testing a quieter way of searching for moons beyond the solar system, using careful measurements of motion ...
"In our solar system, the most massive moon is Ganymede, which is still extremely small compared to what we are inferring ...
A pattern in the movements of a brown dwarf that orbits a Sun-like star is likely to be caused by a moon. If confirmed, this would be the first exomoon, that is a moon orbiting a planet that in turn ...