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  1. What if the biggest known planet in the universe replaced Jupiter？

    What if the biggest known planet in the universe replaced Jupiter？

    31
  2. What if our solar system collides with another solar system？

    What if our solar system collides with another solar system？

    59
  3. What if Earth's orbital speed decreased by 10%？

    What if Earth's orbital speed decreased by 10%？

    54
    1
  4. What if Earth had rings like Saturn？

    What if Earth had rings like Saturn？

    24
  5. Universal Sandbox 2: How to Kill the Earth in Just 20 Short Years!

    Universal Sandbox 2: How to Kill the Earth in Just 20 Short Years!

    5
  6. Exploring the Capella Star System, 3rd of the Ten Brightest Stars in the Northern Hemisphere

    Exploring the Capella Star System, 3rd of the Ten Brightest Stars in the Northern Hemisphere

    2
    0
    48