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Quick question about curvation of spacetime

  1. Dec 14, 2011 #1
    I have been studying up on special and general relativity lately :)
    But still a few things aren't clear to me (obviously)

    Is it energy and mass that curves it or only mass?
    Or putted otherway does a photon curve spacetime ?

    Edit: I think I figured it out, it's indeed energy that curves space and time :)
    So photons do curve it.

    But an confirmation would be nice ! :)
    Last edited: Dec 14, 2011
  2. jcsd
  3. Dec 14, 2011 #2


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    Staff Emeritus
    Science Advisor

    Yes, energy (and momentum, and pressure) all curve space-time, so photons (or, because GR is a classical theory, it's better to say light) curves space-time.
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