Space Exploration
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yippy_yay's user avatar
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yippy_yay
  • Member for 10 years, 3 months
  • Last seen more than a month ago
  • Germany
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question
16
Why are spacecraft assembled in cleanrooms?
Aug 19, 2013
Top network posts
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71
Why do jet engines use kerosene rather than gasoline?
54
How do we know photons have spin 1?
51
Why did most airliners have black noses in the 60's and 70's?
41
Why don't airlines load their passengers like freight?
41
Why are airplanes riveted and not screwed?

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