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geoffc
  • Member for 10 years, 11 months
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27 votes
1 answer
112k views

Did Neil Armstrong really say "Good Luck Mr. Gorsky" on the Moon?

71 votes
10 answers
55k views

Why is SpaceX considering Methane as fuel for their next engine, the Raptor?

22 votes
2 answers
21k views

How do the sizes of the various proposed manned capsules differ?

32 votes
2 answers
18k views

Will the ISS need more docking ports?

24 votes
2 answers
16k views

How are the SpaceX Falcon 9 Mod 3 and Mod 4 grid fins different?

11 votes
3 answers
9k views

What are the consequences of Vertical vs Horizontal integration for SpaceX?

19 votes
1 answer
8k views

What materials are the windows on the US Segment of the ISS made out of?

20 votes
1 answer
7k views

How does SpaceX ignite their engines?

6 votes
3 answers
7k views

Do any current ICBM's have the delta-V to target the sun?

11 votes
2 answers
6k views

What is the outside of the Soyuz capsule covered in?

6 votes
2 answers
5k views

Why do Estes model rockets recommend a smaller engine (B class) for first launches, but support bigger engines later?

12 votes
2 answers
4k views

Why the huge thrust difference between a Sea level and Vacuum J-2 engine?

13 votes
6 answers
4k views

How will SpaceX tie down a landed stage on the ASDS barge after landing?

28 votes
1 answer
4k views

Why the soot pattern on the nosecone of Falcon Heavy side booster?

11 votes
1 answer
4k views

Does the Falcon 9 (v1.1) first stage have an explosive Flight Termination System?

21 votes
1 answer
4k views

Why not use Sparklers on Delta-4 Heavy launches to burn off the hydrogen?

17 votes
5 answers
4k views

Can a solid first stage compete with a liquid fueled first stage?

14 votes
5 answers
4k views

Other than then N-1 (30 engines) has there been a single stage of a rocket with more engines than a Falcon 9?

18 votes
2 answers
4k views

On the Falcon Heavy, why are the side boosters using Ti Grid fins, but not the center core?

14 votes
1 answer
3k views

What is involved in clearing air space for an orbital launch?

16 votes
2 answers
3k views

Why is the descent module of the Soyuz in the middle of its stack?

24 votes
3 answers
3k views

When SpaceX claims to build 4 engines/week, which engines do they mean?

18 votes
2 answers
3k views

Has any payload been as silly, as the Falcon Heavy's Tesla Roadster?

1 vote
1 answer
3k views

Where do the crew sleep on the ISS? Where are the sleeping quarters?

6 votes
1 answer
3k views

What is changing between the Merlin 1D engine and the uprated Merlin 1D+ engine?

20 votes
2 answers
3k views

Will SpaceX delay launches, if the landing site weather is unacceptable?

13 votes
2 answers
3k views

What is the problem with aborting a Space Shuttle launch?

27 votes
2 answers
3k views

For the Starship SN8 flight, did they lose engines in flight?

16 votes
3 answers
2k views

Can Dragon, or Dragon V2 be used to boost the ISS orbit?

29 votes
4 answers
2k views

What started the explosion on the crashed Jason-3 stage landing on the barge?

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