What Is a Redshift?

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05.24.06

'Ask an Astronomer' uses an astronomer, a flying saucer, and a cow to help explain this difficult astronomical concept in simple terms.

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	July 9 The Dragon and the Swan (Gallery Explorer)
	June 1 When Worlds Collide (Showcase)
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	Hidden Universe: NASA's Spitzer Space Telescope
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	Ask an Astronomer
	Audio Podcasts
	El Universo Escondido: NASA's Spitzer Space Telescope

The Spitzer Space Telescope website will be down on Tuesday July 29th from 9am PDT to 10am PDT for server maintenance. Thank you for your patience.

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