User geoffc - Space Exploration Stack Exchange

71 votes

10 answers

57k views

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

asked Dec 18, 2013 at 14:24

33 votes

2 answers

19k views

Will the ISS need more docking ports?

asked Oct 2, 2013 at 13:25

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

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

28 votes

2 answers

3k views

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

asked Dec 16, 2020 at 21:12

27 votes

1 answer

118k views

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

asked Jul 22, 2014 at 18:02

25 votes

2 answers

17k views

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

asked Jun 25, 2017 at 23:48

24 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

23 votes

2 answers

22k views

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

asked Feb 3, 2015 at 18:52

22 votes

1 answer

1k views

Does the ISS team plan cargo flights when at half crew on purpose?

asked Sep 10, 2014 at 13:35

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

20 votes

1 answer

8k views

How does SpaceX ignite their engines?

asked Dec 2, 2013 at 21:27

20 votes

2 answers

3k views

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

asked Jul 25, 2018 at 12:07

19 votes

4 answers

3k views

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

asked Oct 5, 2014 at 14:31

19 votes

1 answer

9k views

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

asked Feb 27, 2014 at 20:37

18 votes

5 answers

4k views

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

asked Nov 8, 2014 at 23:12

18 votes

1 answer

1k views

What is different from the R-7 that launched Sputnik, to the Soyuz launcher used for Soyuz/Progress launches?

asked Feb 10, 2014 at 2:50

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

18 votes

2 answers

4k 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

2 answers

4k views

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

asked Dec 29, 2013 at 13:09

16 votes

4 answers

777 views

What lessons in Space Station design have come out of the ISS?

asked Nov 2, 2014 at 19:29

15 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?

asked Sep 21, 2014 at 23:23

15 votes

1 answer

2k views

Can a Boeing CST-100 be used to provide station reboost?

asked Oct 5, 2014 at 14:41

15 votes

1 answer

4k views

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

asked Nov 26, 2013 at 16:34

15 votes

1 answer

898 views

When a new module is added to the ISS, do they still do the "Shake" test?

asked Nov 15, 2013 at 19:16

15 votes

1 answer

1k views

Highest stage counts in actual launchers?

asked Aug 7, 2013 at 19:27

15 votes

2 answers

3k views

What is the problem with aborting a Space Shuttle launch?

asked Aug 11, 2015 at 21:23

14 votes

3 answers

2k views

What is the new horizontal test stand at SpaceX's McGregor, TX facility meant to test?

asked Jun 4, 2015 at 14:46

14 votes

2 answers

2k views

Could a Delta 4 Heavier be built?

asked Jan 31, 2016 at 20:01

14 votes

1 answer

1k views

Are the power systems on the US and Russian segments of the ISS similar/compatible?

asked Feb 28, 2014 at 2:58

Stack Exchange Network

170 Questions

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

Will the ISS need more docking ports?

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

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

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

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

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

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

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

Does the ISS team plan cargo flights when at half crew on purpose?

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

How does SpaceX ignite their engines?

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

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

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

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

What is different from the R-7 that launched Sputnik, to the Soyuz launcher used for Soyuz/Progress launches?

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

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

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

What lessons in Space Station design have come out of the ISS?

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

Can a Boeing CST-100 be used to provide station reboost?

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

When a new module is added to the ISS, do they still do the "Shake" test?

Highest stage counts in actual launchers?

What is the problem with aborting a Space Shuttle launch?

What is the new horizontal test stand at SpaceX's McGregor, TX facility meant to test?

Could a Delta 4 Heavier be built?

Are the power systems on the US and Russian segments of the ISS similar/compatible?