As Earth’s closest neighbor in space, we know a lot about the moon. We know that the Moon is less than a third of the size of Earth. We know that every 27 days, the Moon rotates around Earth and spins at the same time. This means that the same portion of the Moon is always facing Earth, and the side that isn’t is often referred to as the Dark Side of the Moon.
All of this being said, there’s still a bunch of things that we’re learning about the Moon, and in fact, researchers are unraveling more mysteries nearly every day.
The Moon, says Bruce Betts, chief scientist of the Planetary Society, is a great tool for understanding our lunar history. For example, studying the South Pole-Aitken Basin, the oldest and largest crater on the Moon, tells us a history of long ago that’s largely been wiped out here ...
