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HopDavid

Member for 10 years, 5 months
Last seen more than 10 years ago

hopsblog-hop.blogspot.com/…
Ajo, AZ

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About

I love art and math -- M.C. Escher is an influence. I enjoy science fiction. I'm interested in space exploration.

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Apr 2, 2016

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Autobiographer

Sep 24, 2014

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Top network posts

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53

How fast will 1g get you there?

41

Why don't we launch spacecraft from the Moon?

26

What's the path of something dropped from a space elevator

25

Can a natural satellite exist in a geostationary orbit?

24

What's the path of something dropped from a space elevator