Lightning in Space: Fact or Fiction?

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Discussion Overview

The discussion explores whether phenomena similar to lightning can occur in the vacuum of space, addressing both theoretical and practical considerations. Participants examine the conditions necessary for such events and the implications of space's unique environment.

Discussion Character

  • Exploratory, Debate/contested, Conceptual clarification

Main Points Raised

  • One participant questions if lightning-like phenomena can occur in space, noting its frequent depiction in science fiction.
  • Another participant asserts that traditional lightning requires oppositely charged clouds, which are not present in space.
  • A different participant proposes the theoretical possibility of an electrical arc occurring in a vacuum.
  • Another response suggests that while possible, it is unlikely due to the low density of interstellar gas and dust, which may not allow sufficient charge development.

Areas of Agreement / Disagreement

Participants express differing views on the possibility of lightning-like phenomena in space, with some asserting it is not feasible while others entertain theoretical scenarios. The discussion remains unresolved regarding the conditions under which such phenomena might occur.

Contextual Notes

The discussion highlights limitations related to the assumptions about charge development in space and the definitions of lightning-like phenomena. The dependency on environmental conditions in space is also noted.

muser
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does a phenomena such as lightning happen in the vacuum of space? it's often talks about in sci fi, but i wonder if it actually occurs (theoretically or actually) i tried a google search which turned up nothing.
 
Astronomy news on Phys.org
No, you do not have opposittely charged clouds which are close enough in space.
 
Theoretically though, could anelectrical arch occurr in a vacuum?
 
Possible, but, unlikely. The density of interstellar gas and dust is generally insufficient to allow sufficient charges to develope.
 

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