2. The Moon keeps the same side towards Earth.
It’s not because of shyness about its backside; it’s more a story about the Earth’s gravity. The Moon used to rotate at a different rate than it orbited around Earth, but over time our planet tugged at different parts of the Moon. Over time, more of the Moon’s mass shifted to our side of its body and its rotation became locked to its revolution. This phenomenon, by the way, is also present in other moons in the Solar System. Also interesting: this immense shift inside the Moon made the crust thinner on our side, which means there are more ancient lava seas on our side and more mountains on the other side.