Space Exploration
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djr's user avatar
djr's user avatar
djr
  • Member for 7 years, 3 months
  • Last seen this week
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Top posts
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All Questions Answers
Score Newest
answer
17
Do companies/governments ever sell satellites that are already in space?
Jan 21, 2017
answer
14
Puzzler - which spacecraft(s) incorporated real wood structural elements?
Oct 30, 2016
answer
13
What would one need to do to get an amateur satellite into orbit?
Dec 9, 2017
answer
9
Is HAN-water propellant "green" enough to ever be used in a cubesat?
Oct 30, 2016
answer
8
Is it true that hydrogen is the only practical fuel for upper stages?
Jul 12, 2018
answer
6
Missions at or soon-to-be at Mars and their DSN "codenames"?
Mar 8, 2018
answer
6
Why not build rockets out of composite materials?
Dec 28, 2015
answer
6
What is the minimum number of RCS thrusters capable of stabilizing a satellite against an arbitrary rotation?
Mar 11, 2016
answer
5
How might the experience of a trip to Mars differ in comfort and heath impact from a stint on the ISS?
Mar 9, 2018
answer
5
Why Never-EVER Land?
Mar 22, 2018
Top network posts
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89
Are there any binational mass rapid transit systems?
54
Is a 13-hour layover at Heathrow enough time to go see Buckingham Palace?
49
Tips to avoid forgetting a bag
26
How to get to Schiphol Airport at 5am using public transport from Amsterdam?
17
Do I have to validate train tickets in the UK?

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