EARTH: Jor-El and Lara wind up on Earth

Superman uses a computer to simulate an altered past. Jor-El and Lara are rocketed from Krypton before it explodes a generation earlier than in Superman's timeline. The ship crash lands in Smallville and the babies are found by Henry and Willa Clark. They decide to adopt Lara while Jor-El is adoped by Matt Kent and his wife.