Erik's user avatar
Erik's user avatar
Erik's user avatar
Erik
  • Member for 10 years, 7 months
  • Last seen more than a month ago
113 votes
13 answers
64k views

What are the choices today for orbital mechanics simulation software?

32 votes
1 answer
2k views

How long will communication with the Voyager probes continue?

18 votes
2 answers
3k views

Why multiple lightning towers at launch sites?

15 votes
1 answer
3k views

Online Porkchop Plotter

14 votes
3 answers
4k views

Why weren't SRBs used in the design of the Saturn V?

14 votes
3 answers
3k views

What portion of SpaceX's revenue comes from private sources?

12 votes
2 answers
673 views

Falcon 9 Range Safety

10 votes
1 answer
486 views

Falcon 9 second stage impact on first stage trajectory

9 votes
1 answer
1k views

Space Launch System (SLS) costs

9 votes
1 answer
850 views

What are the features on X-37 fairing/transport jig

9 votes
1 answer
737 views

What are the health risks facing humans on long-term space flights?

9 votes
2 answers
840 views

Smallest launch vehicle by dry mass

8 votes
1 answer
741 views

SpaceX Falcon 9 Reusable first stage propellant for return

8 votes
2 answers
2k views

Questions regarding Falcon Heavy's crossfeed system

8 votes
1 answer
1k views

Why does the Dawn spacecraft have three ion engines at different angles?

4 votes
1 answer
516 views

Which launch system, New Glenn or Falcon 9, has received more government subsidies?

4 votes
1 answer
229 views

Position of the SpaceX barge for the January 10th launch

3 votes
0 answers
86 views

Why are the nozzles on this rocket at an angle? [duplicate]

2 votes
1 answer
1k views

How low can the single Merlin engine on the Falcon 9 first stage throttle?