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Peter Green

Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 4 years, 5 months
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  • Last seen 9 hours ago

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11 Why is fuel cheap compared to rocket? Feb 10 '18
6 Why can Falcon Heavy bring 4.2 times as much mass to Mars than F9, but only 2.7 times as much to LEO? Feb 7 '18
5 How does the Rocket Equation work when you use boosters? Feb 9 '18
4 How long does the refurbishment process of a Falcon 9 take? Nov 23 '18
3 How do vehicles get smoothly to a circular low Earth orbit? Jan 8 '18
3 Is the overall mortality rate for being in a spacecraft in space or bound for space about 4%? Apr 25 '16
2 What would it feel like for an astronaut if his/her spacesuit ran out of air? Jun 28 '19
2 Why does the material for space elevators have to be really strong? Oct 14 '16
1 Have there ever been people trapped in a shut down spacecraft? Dec 6 '18
1 Why is using a space elevator cheaper than rocket power? Sep 11 '18
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