"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 ...

Far beyond the bright planets, in the dim outskirts of the Solar System, astronomers keep stumbling on objects that refuse to follow the rules. Around Neptune in particular, a handful of newly charted ...

Carnegie's Luke Bouma presented exciting new research at the American Astronomical Society meeting revealing how large clumps of cool plasma that are trapped in an M dwarf star's magnetosphere can be ...

This collection celebrates the 30 th anniversary of the detection of the first planet outside our Solar System orbiting a main sequence star. Experts reflect on the impact of various milestones in ...