The Solar System (flashcards)

Derek Cumberbatch
Curso por Derek Cumberbatch, atualizado more than 1 year ago

Descrição

Long ago, the Egyptians knew that the sun was at the center of our solar system. Then Ptolemy proposed the geocentric model, which positioned Earth at the center. Thankfully our knowledge of the Universe is a little better these days. Thanks Copernicus.