It is a mystery that has gripped humanity for hundreds of years — how exactly did our moon come to be? Since the 1970s, astronomers have suspected that our natural satellite was created when a giant ...

Many of the most interesting bodies in our Solar System aren’t planets, but the moons that orbit them. They have active volcanoes, hydrocarbon oceans, geysers, and moon-wide oceans buried under icy ...

New modeling of the early solar system is reshaping the familiar story of how the Moon formed, suggesting that Earth and the impactor known as Theia may have spent their youth circling the Sun as near ...

The moon is our constant companion and the only natural object that always orbits Earth. It's about four times smaller than Earth and its gravity is much weaker, which is why astronauts bounce around ...