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

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 ...

(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 ...

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

Eight planets, hundreds of moons, hundreds of thousands of asteroids, and billions of comets orbiting our Sun make up our Solar System. And not once has a single black hole disturbed our planetary ...