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rocket science

  1. Ambrosia

    Can you save the earth from a Killer Asteroid? (rocket science required)

    PBS Spacetime just released a new challenge question. NzvcVcPnSCY they have requested that the answer isn't discussed in the video comments, or elsewhere online, so please don't post answers to this thread, yet. If you're not aware of this YouTube channel it's definitely worth checking out...
  2. Southwind17

    Green Rocket Science?

    The following headline in a local newspaper today: has me wondering: To what extent is efficiency taken into account in the design and operation of space rockets, by which I generally mean space shuttles?
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