Books by Erik Asphaug

When the Earth Had Two Moons: The Lost History of the Night Sky

by Asphaug, Erik

Paperback

$7.79$6.62

When the Earth Had Two Moons: Cannibal Planets, Icy Giants, Dirty Comets, Dreadful Orbits, and the Origins of the Night Sky

by Asphaug, Erik

Hardcover

$13.89$11.80