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Physics 15 Online
OpenStudy (chrisisdope1):

How were historical solar system models different from our current model?

OpenStudy (chrisisdope1):

Need Four Examples

OpenStudy (anonymous):

geocentric or earth centered system

OpenStudy (anonymous):

Ptolemaic system

OpenStudy (anonymous):

copernicus model

OpenStudy (anonymous):

tycho brahe's model

OpenStudy (anonymous):

hope this helps

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