Earth & Space Science
Image sources: NASA child bubble exploration by Wikimedia Commons user NASA Used under Public domain
National Geographic - Birth of the Solar System
The Solar System's birth was far from peaceful. Witness the spectacular explosion known as the "Big Bang".
Khan Academy - Structure of the earth
Structure of the Earth - crust, mantle, core
National Geographic - Reveal Earth's Atmosphere
Gases essential to life are explored through the history of the atmosphere.