User Schwern

100 votes

Accepted

Why doesn't the Falcon-9 first stage use three legs to land?

answered Aug 19, 2019 at 0:56

86 votes

Can I be a NASA astronaut as a 5 feet 6 inches 16-year-old Bangladeshi girl with eyesight problems?

answered Mar 6, 2021 at 20:19

58 votes

Can't astronauts use ball point pens in space?

answered Jun 29, 2020 at 22:09

57 votes

If we can get people to the moon and back, why are we so adamant that it's impossible to service James Webb at 4x that with a one way robotic vehicle?

answered Dec 26, 2021 at 16:28

48 votes

Accepted

Why is it so hard to build crewed rockets/spacecraft able to reach escape velocity?

answered Jan 16, 2021 at 10:48

41 votes

Accepted

How do US citizens vote in space?

answered Oct 24, 2020 at 0:40

41 votes

Accepted

Why is the speed of James Webb Space Telescope decreasing?

answered Dec 28, 2021 at 11:55

40 votes

Why is it assumed that space flights have to be safe?

answered Jul 3, 2022 at 20:07

31 votes

What led NASA et al. to decide the ISS should be a zero-g station when the massive negative health and quality of life impacts of zero-g were known?

answered Dec 1, 2020 at 22:58

28 votes

Why not build Saturn V's again?

answered Dec 10, 2014 at 3:46

22 votes

Accepted

Why is there so little price difference between the Falcon 9 and the Falcon Heavy?

answered Nov 12, 2014 at 18:33

22 votes

What would be necessary in order for us to achieve a single stage to orbit, reusable rocket?

answered Aug 15, 2018 at 23:37

17 votes

Why did the communication cable of the Perseverance rover make an angle so great with the other three cables?

answered Feb 27, 2021 at 3:54

16 votes

Is the EU really banning "toxic propellants" in 2020? How is that going to work?

answered Aug 2, 2019 at 22:34

13 votes

Cheapest rocket to go to space?

answered Feb 23, 2019 at 20:11

11 votes

Is it common and good engineering for a pair of cables to be easily plugged into each other's connectors in modern spacecraft

answered Nov 19, 2020 at 21:52

11 votes

Accepted

Why is the ring of exhaust gas immediately below the F1 nozzle so dark?

answered Aug 19, 2019 at 0:17

10 votes

Rocket fuel cost to launch 1 kg to orbit

answered Jan 15, 2021 at 21:53

9 votes

Is it possible to perform the Galileo's Leaning Tower of Pisa experiment on the Moon?

answered Dec 15, 2014 at 23:52

9 votes

Would SpaceX Starship be able to slow down enough to enter orbit or land on Pluto-like objects?

answered Sep 1, 2021 at 19:30

8 votes

JWST - Why unfurl before reaching L2?

answered Jan 23, 2022 at 19:08

7 votes

Would having the Falcon fairing reconnect be possible/beneficial?

answered Aug 2, 2018 at 22:38

7 votes

Why does the Perseverance Rover do sample caching?

answered Feb 22, 2021 at 22:16

6 votes

Does NASA have an end-of-the-world policy?

answered Feb 20, 2020 at 21:10

6 votes

The Mars parachute opened against a black sky on Earth but a blue-magenta sky on Mars during Perseverance landing. How is it possible?

answered Feb 25, 2021 at 8:40

6 votes

Accepted

What happened to DSCOVR, what stopped working?

answered Sep 30, 2019 at 17:28

6 votes

Could a Boring Company Excavation Tool be used to create a large circular chamber inside an asteroid?

answered Jun 29, 2018 at 0:29

6 votes

Accepted

How serious is a contagion in space flight?

answered Feb 15, 2015 at 18:36

6 votes

Accepted

how does the direct fusion drive generate electric power?

answered Apr 19, 2021 at 21:54

6 votes

What does the Moon's gravity feel like? If you don't move, could you still tell you're on the Moon?

answered Mar 7, 2021 at 20:37

Stack Exchange Network

52 Answers

Why doesn't the Falcon-9 first stage use three legs to land?

Can I be a NASA astronaut as a 5 feet 6 inches 16-year-old Bangladeshi girl with eyesight problems?

Can't astronauts use ball point pens in space?

If we can get people to the moon and back, why are we so adamant that it's impossible to service James Webb at 4x that with a one way robotic vehicle?

Why is it so hard to build crewed rockets/spacecraft able to reach escape velocity?

How do US citizens vote in space?

Why is the speed of James Webb Space Telescope decreasing?

Why is it assumed that space flights have to be safe?

What led NASA et al. to decide the ISS should be a zero-g station when the massive negative health and quality of life impacts of zero-g were known?

Why not build Saturn V's again?

Why is there so little price difference between the Falcon 9 and the Falcon Heavy?

What would be necessary in order for us to achieve a single stage to orbit, reusable rocket?

Why did the communication cable of the Perseverance rover make an angle so great with the other three cables?

Is the EU really banning "toxic propellants" in 2020? How is that going to work?

Cheapest rocket to go to space?

Is it common and good engineering for a pair of cables to be easily plugged into each other's connectors in modern spacecraft

Why is the ring of exhaust gas immediately below the F1 nozzle so dark?

Rocket fuel cost to launch 1 kg to orbit

Is it possible to perform the Galileo's Leaning Tower of Pisa experiment on the Moon?

Would SpaceX Starship be able to slow down enough to enter orbit or land on Pluto-like objects?

JWST - Why unfurl before reaching L2?

Would having the Falcon fairing reconnect be possible/beneficial?

Why does the Perseverance Rover do sample caching?

Does NASA have an end-of-the-world policy?

The Mars parachute opened against a black sky on Earth but a blue-magenta sky on Mars during Perseverance landing. How is it possible?

What happened to DSCOVR, what stopped working?

Could a Boring Company Excavation Tool be used to create a large circular chamber inside an asteroid?

How serious is a contagion in space flight?

how does the direct fusion drive generate electric power?

What does the Moon's gravity feel like? If you don't move, could you still tell you're on the Moon?