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Space Exploration Beta
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Peter Green

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

13
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  • Member for 3 years, 8 months
  • 5 profile views
  • Last seen 15 hours ago

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Top posts (13) All Questions Answers | Votes Newest

9 Why is space fuel cheap compared to rocket cost? 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 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
1 Is there a database for space junk beyond Earth orbit, and is Roadster in it? Apr 23 '18
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