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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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  • Member for 6 years, 9 months
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50 Is the sun's volume shrinking currently? May 28
40 Is it possible that the shadow of The Moon is a single dot during solar eclipse? Sep 15 '19
36 Why is there so little nitrogen in the Martian and Venusian atmospheres? Jul 3 '20
31 Is it a coincidence that on the far side of the moon almost no seas are visible? Jun 8
31 How was the mass of Venus determined? Sep 27 '20
31 How is it possible that Saturn's gravitational acceleration felt by Mimas is stronger than Mimas' own surface gravity? Sep 14 '20
30 How many times brighter would full-earth-shine appear to people standing on the moon, than full-moon-shine does to people on earth? Feb 8
30 What will the PRECISE time of the Summer Solstice 2020 be? Jun 20 '20
30 Why can't our Sun be a binary with Jupiter as a T or Y dwarf? Jun 5 '16
28 Do our sun and moon have names? Nov 30 '20
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