Massive Rocky Planets Probably Don’t Have big Moons

The Moon has orbited Earth since the Solar System’s early days. Anyone who’s ever spent time at the ocean can’t fail to notice the Moon’s effect. The Moon drives the tides even in the world’s most remote inlets and bays. And tides may be vital to life’s emergence. But if Earth were more massive, the … Continue reading Massive Rocky Planets Probably Don’t Have big Moons