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Classical Mechanics

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Kepler's First Law: Coming into Focus

CLMECH-YIXN3U

Kepler's first law describes the shape of planetary orbits as an ellipse, a mathematical shape that has two foci. One focus is at the sun, where is the other focus?

A

At the planet's location.

B

An empty point in space.

C

As the planet orbits, the focus oscillates based on that motion.

D

The location of the planet's moon.