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Light: Crash Course Astronomy #24

Season 1 Episode 24

About the Episode

In order to understand how we study the universe, we need to talk a little bit about light. Light is a form of energy. Its wavelength tells us its energy and color. Spectroscopy allows us to analyze those colors and determine an object's temperature, density, spin, motion, and chemical composition.

Aired: 07/08/15 | Expires: | Runtime: 10m 33s