Kepler’s First Law of Motion – Elliptical Orbits (Astronomy)

With his first law of planetary motion, Kepler rejected circular orbits and showed that an ellipse could better explain the observed motions of Mars. Generalized to all planets, it states that the orbit of a planet follows an ellipse with the Sun at one focus.

We have videos for all 3 laws!
Kepler’s 1st Law: http://bit.ly/1XCVRSQ
Kepler’s 2nd Law:http://bit.ly/1lzhLVQ
Kepler’s 3rd Law: http://bit.ly/1MZ35bR

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We highly recommend the Astronomy textbook “Universe” by Roger Freedman et al:
Universe 9th Edition http://amzn.to/2so6Ums
Universe 10th Edition http://amzn.to/2tfBjUe

Shop Amazon Used Textbooks – Save up to 90%
http://amzn.to/2pllk4B

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Presented by Liliana de Castro
Written by Meg Rosenburg
Produced by Kimberly Hatch Harrison & Michael Harrison

Questions?