Voyager 1 is a space probe. It doesn't carry any people, but it does carry a lot of equipment. It sends information and pictures back from other planets by radio. Since it left Earth, it has sent a lot of information! Scientists study the information and picture Voyager 1 sends and are able to learn about th other planets. Voyager 1's mission was to fly past jupiter and Saturn. It flew past Jupiter in January 1979, and Saturn in November 1980.But Voyager 1 didn't stop there.