Aidan Robertsās Reviews > A Brief History of Time > Status Update
Aidan Roberts
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Chapter One: Our picture of the universe
šAristotle and Ptolemy believed that the earth was the center of the universe
šCopernicus argued that the sun was the center of the universe. Centuries later Kepler and Galileo updated this theory and determined the planets move in ellipses
šNewtons theories posited that gravity pulls bodies together based on mass. Leading to the idea of the big bang
— Dec 01, 2025 08:04AM
šAristotle and Ptolemy believed that the earth was the center of the universe
šCopernicus argued that the sun was the center of the universe. Centuries later Kepler and Galileo updated this theory and determined the planets move in ellipses
šNewtons theories posited that gravity pulls bodies together based on mass. Leading to the idea of the big bang
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