Title: Edwin Hubble and the theory of the expanding universe
Description: Examines the life and accomplishments of astronomer Edwin Hubble, whose discoveries about the nature and size of the universe solved four central problems in cosmology, one of which formed the basis of the "Big Bang Theory."
Subjects: Astronomers, Juvenile literature, Biography
Places: United States
People: Edwin Powell Hubble (1889-1953), Edwin Powell Hubble