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$I_{sp} = {v_e \over \pi^2}$

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116 Can a human land on Deimos using pressurized deodorant cans? Apr 27
78 How do astronauts on EVA deal with nose itching? Dec 10 '15
67 Why do ISS crew members often cross their arms? Jun 2 '17
64 Why aren't the 'bedrooms' aboard the ISS also the escape pods? May 8 '17
64 Did the Challenger SRBs fail due to design for reuse? Jul 19 '16
54 Does the ISS have a watch system with at least one person monitoring at all times Oct 2 '17
50 Do astronauts live longer than earthlings? Jul 19 '18
50 How does a space probe maintain its trajectory while passing through the extreme gravitational field of the gas giants of our solar system? Jun 11 '18
47 Could the shuttle wait out the whole burn of SRBs on launchpad in case of a problem on launch? Apr 4 '17
46 Using ozone as oxidizer Dec 19 '16
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