Title: Edwin Hubble
Description: "A biography of twentieth-century American astronomer Edwin Hubble who is renowned for determining that there are other galaxies in the Universe beyond the Milky Way, and for observing that the universe is expanding at a constant rate. Includes related activities for readers"--
Subjects: Juvenile literature, Astronomers, Biography, Astronomy, History, Astronomy, history, Astronomy, juvenile literature
Places: United States
People: Edwin Hubble (1889-1953)
Time periods: 20th century