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I know that matter (mass) curves spacetime, but do other forms of energy do the same? I.e. is matter the only form of energy that curves spacetime?

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marked as duplicate by John Rennie, Qmechanic Apr 11 '14 at 10:23

This question was marked as an exact duplicate of an existing question.

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Yes, every type of energy. – jinawee Apr 10 '14 at 21:15
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see this picture from wikipedia - anything that's in there has an effect on space-time geometry – Christoph Apr 10 '14 at 21:17
    
Possible duplicates: physics.stackexchange.com/q/22876/2451 and links therein. – Qmechanic Apr 10 '14 at 21:18
    
possible duplicate of What are the factors affecting the spacetime curvature? – John Rennie Apr 11 '14 at 9:22