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The Planets Revisited Different 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