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Stu's user avatar
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Stu
  • Member for 10 years, 6 months
  • Last seen more than 1 year ago
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  • Seattle, WA
44 votes
5 answers
11k views

Are there any weapons in space?

38 votes
3 answers
58k views

How to programmatically calculate orbital elements using position/velocity vectors?

30 votes
1 answer
60k views

What is the current cost-per-pound to send something into LEO?

22 votes
2 answers
10k views

What is a launch vehicle resting on prior to launch?

22 votes
2 answers
2k views

What's after Pluto for New Horizons?

21 votes
2 answers
834 views

How does Rosetta "wake-up?"

20 votes
1 answer
6k views

How often does the ISS orbit align with the day/night terminator?

18 votes
3 answers
8k views

Are any geosynchronous satellites visible with the naked eye?

16 votes
3 answers
16k views

What propulsion methods does the ISS use for station-keeping?

15 votes
2 answers
2k views

Is there any footage of the rocket that launched Sputnik 1?

14 votes
3 answers
14k views

Why aren't the ISS HDEV cameras left on at night?

13 votes
4 answers
16k views

Are there any benefits to launching from Vandenberg AFB instead of Cape Canaveral?

13 votes
2 answers
12k views

How long does it take for a satellite to reach GEO?

13 votes
5 answers
2k views

Satellite tracking software

12 votes
3 answers
560 views

Has water ever been confirmed on comets?

12 votes
2 answers
463 views

What work is being done to develop and test artificial gravity?

12 votes
2 answers
1k views

What is the largest operational artificial satellite?

12 votes
3 answers
941 views

How is space assigned for satellites that follow intersecting orbits?

12 votes
1 answer
7k views

Geosynchronous orbits around other Solar System objects

12 votes
1 answer
12k views

How does SGP4 work?

11 votes
1 answer
2k views

Have liquid cooling systems been tested for reentry surfaces?

11 votes
1 answer
564 views

Do astronauts take any pills to battle bone density loss?

11 votes
1 answer
6k views

How many successful Soyuz launches have there been?

10 votes
3 answers
2k views

What kind of liquid propulsion systems do GEO satellites use?

10 votes
1 answer
2k views

What was the first rocket to use gimbaled thrust?

9 votes
2 answers
472 views

What is the flight plan to get Gaia in orbit around the Sun–Earth $L_2$ Lagrangian point?

9 votes
2 answers
5k views

What software is often used to plan, launch, and track orbits?

9 votes
2 answers
3k views

How can I predict what an object's orbital state vectors will be in the future?

8 votes
3 answers
1k views

What is a hyperbolic rendezvous?

8 votes
2 answers
1k views

What other bodies in the solar system are most likely to contain forms of life?