astronomy 0.0 / 5 ? PhysicsAstronomyGCSEEdexcel Created by: n1coleCreated on: 04-09-21 21:01 beginning of the universe big bang theory 1 of 6 expansion steady state 2 of 6 earth-centred geocentric 3 of 6 radiation from space cosmic background radiation 4 of 6 hydrogen fusion stage main sequence star 5 of 6 cloud of dust nebula 6 of 6
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