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76 votes

3 answers

51k views

Was the NOAA-N Prime satellite really dropped on the floor?

asked Sep 5, 2013 at 13:45

60 votes

5 answers

32k views

What are the towers around the SpaceX launch pad used for?

spacex launch launch-site

asked Nov 29, 2013 at 20:20

53 votes

2 answers

46k views

What is the purpose of the jets of water often under rocket engines during launch?

launch space-shuttle water launchpad

asked Aug 25, 2013 at 1:39

44 votes

3 answers

28k views

Would it have been possible to have sent the Space Shuttle around the Moon?

the-moon space-shuttle feasibility

asked Sep 6, 2013 at 23:29

40 votes

4 answers

5k views

Are there any safety procedures in place on the ISS in case of puncture?

iss life-support shielding debris

asked Jul 31, 2013 at 15:24

35 votes

3 answers

23k views

About how long will Curiosity last on its nuclear power?

mars rovers energy curiosity

asked Jul 17, 2013 at 1:09

28 votes

3 answers

2k views

What science are the Voyager missions still doing after so many years away from the Solar System?

voyager science

asked Jul 16, 2013 at 20:59

26 votes

3 answers

14k views

Why is it so hard to walk on the Moon?

the-moon reduced-gravity-sports moonwalking

asked Sep 22, 2013 at 20:29

24 votes

1 answer

2k views

What problems led to the use of the Sky Crane system used by Curiosity?

mars rovers curiosity skycrane

asked Jul 17, 2013 at 2:09

21 votes

4 answers

10k views

How can Mars have dust storms with such a thin atmosphere?

mars planetary-science weather dust

asked Sep 24, 2013 at 14:17

21 votes

2 answers

3k views

Why did a flight controller say "Avionics power nominal" as Antares exploded?

antares failure

asked Oct 28, 2014 at 23:20

20 votes

1 answer

6k views

Why is a stick required to operate Soyuz's computer?

launch soyuz-spacecraft flight-computer

asked Mar 25, 2014 at 21:27

20 votes

3 answers

696 views

Would temperatures be more stable under the surface of Mercury?

colonization caves mercury temperature

asked Oct 29, 2013 at 4:32

20 votes

2 answers

530 views

Does the Perseid peak affect mission launches?

launch meteorites perseid

asked Aug 13, 2013 at 1:06

19 votes

1 answer

1k views

Why are three cosmonauts required to move a Soyuz?

iss crewed-spaceflight docking soyuz-spacecraft procedure

asked Nov 2, 2013 at 21:56

19 votes

2 answers

2k views

How are dead animals disposed of on the ISS?

iss animals death

asked Jan 3, 2014 at 4:41

18 votes

1 answer

25k views

At what angle did Apollo 13 need to reenter?

apollo-program reentry apollo-13

asked Dec 6, 2013 at 15:00

18 votes

4 answers

10k views

What is the base of a launchpad made of?

launch materials launchpad

asked Nov 25, 2013 at 15:25

18 votes

1 answer

500 views

How will Curiosity manage its power when its nuclear power starts to run low?

curiosity energy

asked Jul 17, 2013 at 2:52

17 votes

1 answer

848 views

How does NASA keep radiation from frying rovers?

radiation mars rovers

asked Jul 16, 2013 at 21:03

17 votes

2 answers

2k views

Why is the "impossible" space drive impossible?

propulsion advanced-propulsion emdrive

asked Aug 1, 2014 at 16:32

16 votes

3 answers

1k views

The Russians recently tested a new launch trajectory that goes to the space station in about six hours. What allowed for the difference?

launch iss russia trajectory docking

asked Jul 19, 2013 at 1:13

16 votes

1 answer

9k views

What would have happened if the skin of an Apollo lunar module was ruptured?

life-support apollo-program

asked Aug 1, 2013 at 16:02

16 votes

2 answers

2k views

Can plants grow in microgravity?

life microgravity plants

asked Aug 8, 2013 at 13:59

16 votes

2 answers

2k views

Do Russian and American spacecraft use the same docking mechanism?

nasa apollo-program docking roscosmos soyuz-spacecraft

asked Aug 15, 2013 at 2:51

16 votes

1 answer

427 views

What probe received the most gravitational assists?

deep-space probe gravity-assist

asked Sep 7, 2013 at 14:44

16 votes

1 answer

2k views

Why aren't SpaceX controllers allowed to abort during the final 10 seconds?

launch spacex falcon-9 abort

asked Nov 29, 2013 at 20:26

16 votes

1 answer

2k views

Why is the Sokol spacesuit considered inadequate for EVA?

spacesuits eva sokol-spacesuit

asked Dec 10, 2013 at 21:49

15 votes

1 answer

2k views

Do American astronauts wear Sokol space suits when flying on a Soyuz?

spacesuits russia soyuz-spacecraft sokol-spacesuit

asked Dec 10, 2013 at 21:44

15 votes

1 answer

3k views

Why was the Apollo CM main engine thought to be unreliable on Apollo 13?

apollo-program engine-design engines apollo-13

asked Sep 24, 2013 at 17:29

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91 Questions

Was the NOAA-N Prime satellite really dropped on the floor?

What are the towers around the SpaceX launch pad used for?

What is the purpose of the jets of water often under rocket engines during launch?

Would it have been possible to have sent the Space Shuttle around the Moon?

Are there any safety procedures in place on the ISS in case of puncture?

About how long will Curiosity last on its nuclear power?

What science are the Voyager missions still doing after so many years away from the Solar System?

Why is it so hard to walk on the Moon?

What problems led to the use of the Sky Crane system used by Curiosity?

How can Mars have dust storms with such a thin atmosphere?

Why did a flight controller say "Avionics power nominal" as Antares exploded?

Why is a stick required to operate Soyuz's computer?

Would temperatures be more stable under the surface of Mercury?

Does the Perseid peak affect mission launches?

Why are three cosmonauts required to move a Soyuz?

How are dead animals disposed of on the ISS?

At what angle did Apollo 13 need to reenter?

What is the base of a launchpad made of?

How will Curiosity manage its power when its nuclear power starts to run low?

How does NASA keep radiation from frying rovers?

Why is the "impossible" space drive impossible?

The Russians recently tested a new launch trajectory that goes to the space station in about six hours. What allowed for the difference?

What would have happened if the skin of an Apollo lunar module was ruptured?

Can plants grow in microgravity?

Do Russian and American spacecraft use the same docking mechanism?

What probe received the most gravitational assists?

Why aren't SpaceX controllers allowed to abort during the final 10 seconds?

Why is the Sokol spacesuit considered inadequate for EVA?

Do American astronauts wear Sokol space suits when flying on a Soyuz?

Why was the Apollo CM main engine thought to be unreliable on Apollo 13?