You don't look a day over 4.35 billion! Here's the moon's anti-aging secret
Early interactions with the Earth may have heated up the Moon and caused it to remelt, producing new lunar rocks and erasing old craters.
volcanic activity
Giant Pumice Raft Floating Towards Australia Could Help Replenish Great Barrier Reef
An underwater volcano is thought to have produced a sheet of pumice that stretches 58 square miles.