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Decoding Cosmic Spectra

  • By Lexi Krock
  • Posted 09.28.04
  • NOVA

In this interactive, learn how astronomers use a light analysis technique called spectroscopy to reveal the composition of distant stars, galaxies, and nebulas, then try it out yourself on four different cosmic objects.

Launch Interactive

Play astronomer and analyze the spectral fingerprints of a planet, star, galaxy, and nebula.

Credits

Photos

(star, galaxy, nebula, planet)
© NASA; graphics: © WGBH/NOVA

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