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Are time machines possible? (serious)

  1. Apr 24, 2015 #1

    I have read a little about time machines and going back in time, and whether that is considered possible according to modern physics.

    [mentor's note - some additional text not relevant to the physical question has been removed]
    Last edited by a moderator: Apr 24, 2015
  2. jcsd
  3. Apr 24, 2015 #2


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    Gold Member

  4. Apr 24, 2015 #3
    Thanks. That's what I thought.

    Can I ask which particular law of Physics prohibits it?
  5. Apr 24, 2015 #4


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    Basically, it just causality. There are MANY threads on this forum about "time machines" so a forum search would likely give you some good discussion. A good place to start is the set of links at the bottom of this thread.
  6. Apr 24, 2015 #5
  7. Apr 24, 2015 #6


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    Staff: Mentor

    What phinds said.
    Thread closed.
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