Quote:
Originally Posted by qubit
This is a consequence of quantum theory, which says that a vacuum is not truly empty, but fizzes with fleeting pairs of particles and their antimatter counterparts. Normally, these pairs rapidly annihilate and disappear again, but if a pair of photons pops out too close to a black hole, one falls in – and the other escapes.
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Not a pair of photons but a pair of virtual particles. (because photon is an antiparticle of itself). Or did they mean something else?
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...the young Universe was filled with a hot dense soup of interacting protons, electrons and photons at about 2700ºC. When the protons and electrons joined to form hydrogen atoms, the light was set free
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