AS102 Study Guide - Final Guide: Cosmic Microwave Background, Dark Matter Halo, Grand Unified Theory
Document Summary
There is not an edge to the universe: could never ind such a boundary. If the sky is littered with stars which all produce visible light, why isn"t the night sky illed with starlight: true if the universe were ininite, unchanging, and everywhere the same. Light from galaxies revealed how far away the galaxies are by the amount of light was redshifted: realized that the universe is expanding, raisin-bread-baking analogy, found in textbook. Big band theory or how it all started. Introduced by george lemaitre: proposed: universe began as a very small, very hot primordial bundle of energy. Derived from hubble"s determination expanding of the universe. All current matter had to be contained in a very small place a singularity. Big band theory given by fred hoyle (steady-state universe). The instant the universe began, the localized energy expanded very rapidly: it is space that grew explosively, matter within the space is simply being carried along for a ride.
