2 Before 1500To determine what was true/false people turned to ancient Greek/Roman authors or the Bible.
3 Geocentric Theory Earth-centered view of the universe Earth was an immovable objectEverything else moved around the Earth
4 Aristotle Greek philosopher of the 4th century BC Developed the Geocentric Theory
5 Ptolemy Greek astronomer of the 2nd century AD Expanded the geocentric theory which was also supported by Christianity
6 Scientific Revolution A new way of thinking about the natural world based on natural observation and willingness to question accepted beliefsMid 1500sChallenged the ideas of the ancient thinkers and the churchReplaced old assumptions with new theories