Watch Trailer
DISCLAIMER: Not all titles shown are currently available on all streaming providers.

Watch Crash Course Astronomy Season 1 Episode 24 Online

  • 8/10
  • Subtitles: English

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.