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Our Expanding Universe. What is a Theory?. Not a fact A hypothesis that has lots of support Accepted hypothesis. Big Bang Theory. Most popular theory Says that at first matter was in one small area, and than it got so hot it exploded
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What is a Theory? Not a fact A hypothesis that has lots of support Accepted hypothesis
Big Bang Theory Most popular theory Says that at first matter was in one small area, and than it got so hot it exploded This theory suggests that everything is still expanding and growing
What supports the Big Bang Theory? 1. Red Shift: the universe is still expanding 2. Cosmic Microwave radiation found from the Big Bang
Oscillating-Universe Theory Supports the Big Bang The universe started with a Bang and expands until gravity causes it to have a great crash (get smaller again) and so on We are in a state of expansion
Steady State Theory The universe has always looked as it does, and its overall composition does not change