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42 votes

3 answers

10k views

Have we attempted to experimentally confirm gravitational time dilation?

asked Nov 21, 2016 at 15:29

41 votes

1 answer

43k views

What is a "suicide burn"?

asked Jul 27, 2015 at 19:59

35 votes

7 answers

16k views

How could a 90 m/s delta-v be enough to commit the space shuttle to landing?

asked Sep 16, 2015 at 13:29

32 votes

5 answers

6k views

If we build a space elevator from Earth surface to GEO, could I step off it at GEO and remain in GEO?

asked Aug 12, 2014 at 11:10

26 votes

1 answer

6k views

Was the Apollo 13 CM guidance computer fully shut down?

asked Oct 26, 2013 at 21:58

22 votes

2 answers

3k views

Could a single crew member fly the Apollo LM?

asked Sep 26, 2014 at 9:32

22 votes

2 answers

5k views

What is the marginal cost of landing on the Moon?

asked Jun 6, 2014 at 17:11

22 votes

2 answers

3k views

Did Sputnik 1 have attitude control?

asked Oct 14, 2016 at 14:05

18 votes

1 answer

3k views

What makes time on the DSN so expensive?

asked Apr 6, 2017 at 11:59

17 votes

2 answers

3k views

In the Saturn V launch sequence, what defined COMMIT, and what happened between COMMIT and LIFTOFF?

asked Aug 14, 2016 at 13:56

17 votes

1 answer

4k views

Is there any merit to the Apollo 13 (movie) statement "a computer that can hold millions of pieces of information"?

asked Oct 28, 2015 at 19:06

13 votes

3 answers

2k views

How precise are our Mars landings?

asked Feb 8, 2016 at 14:52

10 votes

1 answer

1k views

To what extent did Apollo payload mass drive Saturn capability?

asked Feb 24, 2017 at 20:11

9 votes

1 answer

1k views

Why has the Earth's motion carried it out of view of Pioneer 11's antenna?

asked Mar 11, 2016 at 21:54

9 votes

1 answer

641 views

How much extraneous mass did each of the Apollo missions carry?

asked Mar 7, 2015 at 17:30

9 votes

1 answer

1k views

Are there seasons on Luna?

asked Jan 30, 2014 at 15:25

9 votes

2 answers

4k views

What is the effect of gravity slingshots around Earth on Earth's rotation and orbit time, and is this effect worth considering?

asked Sep 21, 2015 at 14:42

8 votes

1 answer

3k views

Could the Apollo LM abort mode be engaged after touchdown? What would have happened if it was?

asked May 28, 2017 at 12:17

7 votes

2 answers

2k views

Which STS mission raised the normal engine throttle above 100%, and what change to the SSME made that possible?

asked Jul 4, 2016 at 21:00

6 votes

3 answers

473 views

How was radio telescope observation data transferred before wide availability of high-speed Internet?

asked Jun 8, 2017 at 18:25

6 votes

3 answers

1k views

What is the typical relative impact velocity of orbital debris in low Earth orbit?

asked Jun 12, 2017 at 8:59

5 votes

4 answers

525 views

Do transfer orbits toward the central star necessarily result in a higher velocity on arrival due to the star's gravity?

asked Jan 10, 2016 at 19:37

4 votes

1 answer

604 views

What scientific and technological advances were prompted directly by Sputnik 1?

asked Apr 7, 2016 at 20:34

4 votes

0 answers

300 views

From where is this sequence in the Apollo 13 (movie) extra material showing Gene Kranz?

asked Apr 10, 2016 at 19:45

4 votes

1 answer

2k views

Is it correct to say that a LH2/LOX rocket uses water as propellant?

asked Nov 26, 2016 at 18:41

3 votes

1 answer

223 views

Which current (2016) ISS resupply vehicles are human-rated, and how many astronauts can they each support?

asked Mar 18, 2016 at 20:49

2 votes

4 answers

1k views

Is powered descent from orbit a viable method of reentry on bodies with an atmosphere?

asked Jul 30, 2015 at 11:07

Stack Exchange Network

27 Questions

Have we attempted to experimentally confirm gravitational time dilation?

What is a "suicide burn"?

How could a 90 m/s delta-v be enough to commit the space shuttle to landing?

If we build a space elevator from Earth surface to GEO, could I step off it at GEO and remain in GEO?

Was the Apollo 13 CM guidance computer fully shut down?

Could a single crew member fly the Apollo LM?

What is the marginal cost of landing on the Moon?

Did Sputnik 1 have attitude control?

What makes time on the DSN so expensive?

In the Saturn V launch sequence, what defined COMMIT, and what happened between COMMIT and LIFTOFF?

Is there any merit to the Apollo 13 (movie) statement "a computer that can hold millions of pieces of information"?

How precise are our Mars landings?

To what extent did Apollo payload mass drive Saturn capability?

Why has the Earth's motion carried it out of view of Pioneer 11's antenna?

How much extraneous mass did each of the Apollo missions carry?

Are there seasons on Luna?

What is the effect of gravity slingshots around Earth on Earth's rotation and orbit time, and is this effect worth considering?

Could the Apollo LM abort mode be engaged after touchdown? What would have happened if it was?

Which STS mission raised the normal engine throttle above 100%, and what change to the SSME made that possible?

How was radio telescope observation data transferred before wide availability of high-speed Internet?

What is the typical relative impact velocity of orbital debris in low Earth orbit?

Do transfer orbits toward the central star necessarily result in a higher velocity on arrival due to the star's gravity?

What scientific and technological advances were prompted directly by Sputnik 1?

From where is this sequence in the Apollo 13 (movie) extra material showing Gene Kranz?

Is it correct to say that a LH2/LOX rocket uses water as propellant?

Which current (2016) ISS resupply vehicles are human-rated, and how many astronauts can they each support?

Is powered descent from orbit a viable method of reentry on bodies with an atmosphere?