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  1. Elliptical Orbit, Energy, Conservation - Physics

    Elliptical Orbit, Energy, Conservation - Physics

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  2. Space X’s Polaris Dawn Flies on a Record-High Orbit, will Attempt Spacewalk

    Space X’s Polaris Dawn Flies on a Record-High Orbit, will Attempt Spacewalk

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  3. Zachariah Sitchen - Friend or Fraud?

    Zachariah Sitchen - Friend or Fraud?

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  4. SpaceX astronauts complete first private spacewalk

    SpaceX astronauts complete first private spacewalk

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