This made me realize that our effort to land on the moon is effectively landing on a relocated proto-Earth's mantle. On a grander scale, landing on any planet i

This made me realize that our effort to land on the moon is effectively landing on a relocated proto-Earth's mantle. On a grander scale, landing on any planet in the solar system would probably raise similar thought, but as Moon seems to be directly derived from earth, it will still mean something different for us to land on, say, Mars.