Smithsonian Institution
National Air and Space Museum: Exploring the Planets: Ancient Times & the Greeks
In ancient times only five planets were known: Mercury, Venus, Mars, Jupiter, and Saturn. Learn about Greek astronomer Ptolemy's theory for the solar system that was to survive for fourteen centuries.
American Museum of Natural History
American Museum of Natural History: Jupiter O Logy Card
Flip this interactive card to start learning about Jupiter, the largest planet in our solar system. Answer multiple-choice and fact-or-fiction questions and review some fast facts about Jupiter.