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A Brief History of Astronomy's Evolution

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"  You have to know the past to understand the present."                                                                                         -Astronomer and Author, Carl Sagan (1980) All innovations and discoveries, no matter how small or large, are all built upon the work and knowledge of predecessors - even Einstein's famous general theory of relativity was only possible due to the foundation built by astronomers throughout the ages! That's why knowing how our understanding of the universe has changed through the ages is crucial for laying the groundwork for any future discoveries. Understanding the challenges and sacrifices faced in order to allow astronomy to become what we all know and love also allows people to gain a brand new admiration for this vast subject. So without further ado, let's get into seeing the history and evolution of astronomy! Fig 1- Geometric Model Born in 100AD, the Greek astronomer Ptolemy established the Ptolemaic geocentric system