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HopDavid

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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47 How fast will 1g get you there? Jul 21 '14
41 Why don't we launch spacecraft from the Moon? Aug 4 '15
24 What's the path of something dropped from a space elevator Sep 1 '14
23 Gravity Assist braking Dec 4 '14
23 What's the path of something dropped from a space elevator Sep 1 '14
22 Why did SpaceX attempt to land the booster on a barge instead of somewhere on land? Jan 12 '15
22 What's after Pluto for New Horizons? May 22 '14
21 How long will a 500 km altitude satellite spend in Earth - shade per orbit Aug 31 '15
20 What is the rarest launch window? Jul 12 '18
18 Reverse Lunar Space Elevator Dec 10 '14
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