Exploratory spaceships are crucial for sending us information from outside our Solar System. Topics include: the first human-made satellite, "Sputnik I," space-probes and how they investigate other worlds, and structures of these worlds-their climates, geological compositions, and magnetic fields. Also discussed: the Moon and the launching of satellites to the Moon, Mars, Venus, Jupiter, and Mercury. Lastly, learn about missions to other planets, including the Voyager I missions.

Originally released by Cerebellum Corporation, 2013. Streaming video file encoded with permission for digital streaming by Infobase on July 10, 2018.

History of Space Exploration (1:28); --Space Probes (5:30); -- The Voyager Mission (2:12); -- Summary (1:43); -- Credits: Exploratory Spaceships (0:47); .