Episode

Astronomy Cast

Wizzard Media

Science & Medicine, Natural Sciences

Chart Positions

Natural Sciences 15
Science & Medicine 42

Astronomy Cast brings you a weekly fact-based journey through the cosmos.

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Ep. 171: Solar System Movements and Positions

January 4th, 2010

Episode 203 of 465 episodes

Even in ancient times, astronomers realized there was something different about the planets - they move! The movement of the planets and their moons are governed by gravity. And as we all know, gravity can do some funny things.

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