This page is part of the module ESCI A.S1.O1 Describe both the big bang theory of universe formation and the nebular theory of solar system formation and evidence supporting them and hasn't been unlocked yet.
Completion Prerequisites
The following requirements need to be completed before this page will be unlocked:
ESCI A.S1.O1.A4 Big Bang Introduction ESCI A.S1.O1.A6 Cosmic Background Radiation