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Energy source for spacecraft

  1. Aug 14, 2015 #1
    Hi.

    Does anyone advise me what I can get out from space and use it as energy for space craft ?

    Thank.

    By.
     
  2. jcsd
  3. Aug 14, 2015 #2

    Drakkith

    User Avatar

    Staff: Mentor

    Your question is a little unclear. Are you asking what you can harvest from space to use as an energy source for a spacecraft? If so, then where in space are you asking about? Interplanetary space? Interstellar space? Nebulae? Do you want to know what you can harvest from gas giants, asteroids, comets, etc?
     
    Last edited: Aug 14, 2015
  4. Aug 14, 2015 #3
  5. Aug 14, 2015 #4
    Hydrogen and helium, and a lot of it. (It makes over 80% of all atoms in the universe).
     
  6. Aug 14, 2015 #5
    It's pretty thinly spread out in interstellar space though, not enough there be able to collect it very effectively.
    Even if there was enough, in order to use it as a power source you would need some kind of very efficient but light weight fusion technology,
    certainly way beyond any technology we can presently foresee.
     
    Last edited: Aug 14, 2015
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