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Nasa: The Space Place: How Old Do I Look?

Curated by ACT

Find out how the Galex space telescope is determining the age of galaxies using red-shifted light. View pictures taken by Galex. This site also has a game which involves determining the ages of objects.

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Additional Tags
galex, red shift, doppler, galaxy, telescope, doppler effect
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Classroom Considerations
  • Knovation Readability Score: 3 (1 low difficulty, 5 high difficulty)