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David Hammen

I'm an ex-ex-rocket scientist. I briefly left the NASA fold to work at a startup filled mostly with similar ex-rocket scientists. We applied what we learned about making rockets reliably, economically, and safely move from point A to point B to all kinds of other devices that move from point A to point B. I came back to the NASA fold because, in hindsight, that was not the best time to make the jump to oil and gas (upstream).

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Top posts (652) All Questions Answers | Votes Newest

221 Does Earth really have two high-tide bulges on opposite sides? Jun 26 '14
185 Is the butterfly effect real? Jan 26 '16
142 Why was carbon-12 chosen for the atomic mass unit? May 13 '17
111 In the earth's crust, why is there far more uranium than gold? Nov 4 '14
67 How far ahead can we predict solar and lunar eclipses? Sep 26 '14
65 Why is Earth's climate so stable? Sep 25 '14
52 Could we send a man safely to the Moon in a rocket without knowledge of general relativity? Mar 18 '15
47 What does the Moon's orbit around the Sun look like? Jul 6 '16
44 What do you really see on a line of clocks as you pass by them at high speed? Aug 1 '14
41 How much red, blue, and green does white light have? Jul 30 '14
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