Smithsonian Institution
National Museum of Natural History: Paleobiology: Geologic Time: Hadean Eon
Journey into the past while reading this comprehensive overview of the Hadean Eon that covers topics such as the formation of the earth, its surface and atmosphere, fossil evidence, erosion and plate tectonics.
Untamed Science
Untamed Science: Biology: Evolution: History of Life: Origins
Learn about the scientific hypotheses of the origin of life on Earth. [5:55]
CK-12 Foundation
Ck 12: Earth Science: Formation of Earth
[Free Registration/Login may be required to access all resource tools.] How Earth was formed.