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mart
  • Member for 9 years, 1 month
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21 votes
4 answers
5k views

What's the (particle) density of the asteroid belt?

19 votes
5 answers
1k views

Is there any non-rocket spacelaunch concept within reach of current material science and technology?

12 votes
1 answer
2k views

What is a typical energy demand and carbon footprint of a space launch?

10 votes
2 answers
809 views

Why Earth flybys?

8 votes
1 answer
776 views

Is there a profile of atmospheric pressure and gravity of Uranus?

8 votes
4 answers
2k views

What is the barometric formula for a gas giant?

7 votes
1 answer
2k views

Constant acceleration Rockets

6 votes
1 answer
977 views

How do I calculate lowest possible mission delta V from Escape velocities?

4 votes
0 answers
413 views

Can we build a factory in zero gravity space? [closed]

1 vote
2 answers
503 views

Quick and dirty way to estimate flight times for constant acceleration rockets