The Planets RevisitedDifferent Worlds: Star Stuff Clips

1. Clyde Tombaugh discovers Pluto

   Duration: 02:26

2. Mariner 4 flies by Mars

   Duration: 04:20

3. Shoemaker-Levy 9 hits Jupiter

   Duration: 01:40

4. Sputnik launches

   Duration: 03:21

5. Kuiper Belt clues

   Duration: 01:12