On the Moon's far side, shielded from Earth's radio cacophony, Americans are building a radio-astronomy observatory. Russians sift the dust of a lunar "sea" for helium-3 to run future fusion reactors. Commercial robots, remotely operated from Earth, roam the Moon's near side in a hunt for mineral wealth. Why chase distant asteroids for precious metals? Onetime asteroids must lie close beneath the much-bombarded lunar surface. Then a prospecting robot encounters a desiccated, spacesuited figure. An alien figure...