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A comment on Transfer of atomic mass with a photon solves the momentum paradox of light. Parent comment

Re:Transfer of atomic mass with a photon solves the momentum... by sillysaurus3 on Sunday July 02, 2017 @01:00PM (#14683273)
Without an expanding universe, one problem is "How does everything form, given that gravity exists?"

No expansion = everything falls together.

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Re:Transfer of atomic mass with a photon solves the momentum... by lanna on Sunday July 02, 2017 @03:28PM (#14683944)
not if the universe is flat and simply connected (i.e, infinite): https://physics.stackexchange.com/questions/109063/how-come-...
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