40 years since the first... www.astronomy.com

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The Space Shuttle - NASA www.nasa.gov

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Astronomy Fact of the Day:... www.slsc.org

Space Shuttle - Wikipedia en.wikipedia.org

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Why did NASA retire the... www.astronomy.com

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Space & astronomy, Space... www.alamy.com

The Space Shuttle - NASA www.nasa.gov

Space Shuttle and Space... ecuip.lib.uchicago.edu

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space shuttle exploration... www.vecteezy.com

Space Shuttle program -... en.wikipedia.org

Cartoon Space Shuttle... www.redbubble.com

space shuttle | Definition... www.ldoceonline.com

Astronomy Board sees Space... ls.wisc.edu