User geoffc

27 votes

1 answer

110k views

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

asked Jul 22, 2014 at 18:02

72 votes

10 answers

55k views

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

asked Dec 18, 2013 at 14:24

22 votes

2 answers

21k views

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

asked Feb 3, 2015 at 18:52

32 votes

2 answers

17k views

Will the ISS need more docking ports?

asked Oct 2, 2013 at 13:25

24 votes

2 answers

16k views

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

asked Jun 25, 2017 at 23:48

10 votes

3 answers

9k views

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

asked Mar 7, 2014 at 20:12

19 votes

1 answer

8k views

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

asked Feb 27, 2014 at 20:37

21 votes

1 answer

7k views

How does SpaceX ignite their engines?

asked Dec 2, 2013 at 21:27

6 votes

3 answers

7k views

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

asked Jan 6, 2016 at 13:58

11 votes

2 answers

6k views

What is the outside of the Soyuz capsule covered in?

asked Dec 30, 2013 at 16:13

6 votes

2 answers

4k views

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

asked Aug 20, 2014 at 14:20

12 votes

2 answers

4k views

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

asked Feb 13, 2014 at 17:52

13 votes

6 answers

4k views

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

asked Dec 15, 2014 at 0:57

28 votes

1 answer

4k views

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

asked Feb 15, 2018 at 19:23

11 votes

1 answer

4k views

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

asked Apr 15, 2015 at 20:47

21 votes

1 answer

4k views

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

asked Dec 31, 2013 at 17:08

18 votes

2 answers

3k views

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

asked Dec 20, 2017 at 17:01

16 votes

5 answers

3k views

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

asked Nov 8, 2014 at 23:12

14 votes

5 answers

3k views

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

asked Sep 21, 2014 at 23:23

15 votes

1 answer

3k views

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

asked Nov 26, 2013 at 16:34

25 votes

3 answers

3k views

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

asked Oct 20, 2013 at 16:39

16 votes

2 answers

3k views

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

asked Dec 29, 2013 at 13:09

18 votes

2 answers

3k views

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

asked Jan 1, 2018 at 20:15

20 votes

2 answers

3k views

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

asked Jul 25, 2018 at 12:07

6 votes

1 answer

3k views

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

asked Feb 2, 2015 at 15:51

1 vote

1 answer

3k views

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

asked Jul 14, 2016 at 16:09

12 votes

2 answers

3k views

What is the problem with aborting a Space Shuttle launch?

asked Aug 11, 2015 at 21:23

27 votes

2 answers

3k views

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

asked Dec 16, 2020 at 21:12

29 votes

4 answers

2k views

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

asked Jan 18, 2016 at 15:30

16 votes

3 answers

2k views

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

asked Oct 5, 2014 at 14:31

Stack Exchange Network

168 Questions

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

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

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

Will the ISS need more docking ports?

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

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

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

How does SpaceX ignite their engines?

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

What is the outside of the Soyuz capsule covered in?

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

What is the problem with aborting a Space Shuttle launch?

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

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

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