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The Planets Revisited Life: Black Holes Clips

  1. River channels on Mars

    Duration: 01:16

  2. Life on Europa?

    Duration: 01:01

  3. Indestructible life

    Duration: 04:51

  4. Mariner 2 seeks life on Venus

    Duration: 01:40

  5. Extreme life on Earth

    Duration: 02:14

  6. Viking tests for Martian life

    Duration: 03:52

  7. Percival Lowell maps Mars

    Duration: 00:42