User kim holder

85 votes

Why are we trying to build a base on Mars before the Moon?

answered Jul 6, 2015 at 0:32

61 votes

Accepted

Why does the ascent stage of Apollo 11's lunar module look like it's made of paper?

crewed-spaceflight apollo-program spacecraft myth-busting apollo-11

answered Nov 13, 2014 at 2:17

46 votes

How do we know the Apollo Moon landings are real?

the-moon apollo-program history myth-busting

answered Jun 28, 2018 at 20:07

44 votes

Accepted

Why are spaceship capsules frustum shaped?

rockets spacecraft reentry technology aerobraking

answered Dec 8, 2014 at 15:58

38 votes

Accepted

What does 'Switch SCE to AUX' mean?

launch apollo-program failure apollo-12

answered Aug 16, 2016 at 15:33

34 votes

Accepted

Is there any evidence that NASA was worried about deep lunar dust?

the-moon nasa history dust regolith

answered Aug 11, 2015 at 21:50

27 votes

Accepted

Dawn Spacecraft: Why are the orbits so high?

probe dawn-mission ceres

answered Mar 8, 2015 at 2:15

24 votes

Accepted

Which, if any, US laws apply on the ISS?

iss law

answered Mar 27, 2015 at 21:53

23 votes

What is the largest hurdle of the mission to Mars?

launch mars landing crewed-spaceflight

answered Nov 18, 2014 at 19:38

21 votes

How much power would a spacecraft's magnetic shield require?

magnetic-field power research shielding cosmic-radiation

answered Apr 6, 2015 at 16:53

21 votes

What is the most heated exoatmospheric conflict to-date?

crewed-spaceflight history astronaut-lifestyle psychology

answered Feb 26, 2018 at 0:41

17 votes

Why only 12 men have made lunar-walks and not all 18 men?

apollo-program

answered Dec 7, 2014 at 15:51

15 votes

What term can we use to describe a planet's or dwarf planet's nearest distance to Earth?

terminology

answered Jul 17, 2015 at 14:29

15 votes

Engineering difficulties towards near-perfect rockets?

rockets safety

answered Jan 6, 2016 at 17:43

15 votes

What is the deepest part of the moon on the near side?

the-moon lunar-base crater

answered Oct 20, 2021 at 15:59

14 votes

Accepted

Could Starman get ejected from the Solar System?

orbital-mechanics gravity-assist tesla-roadster escape-velocity near-earth-object

answered Feb 10, 2018 at 4:13

14 votes

Accepted

Is this explanation for the SpaceX 1-Sept-2016 anomaly plausible?

spacex falcon-9 failure lox helium

answered Sep 26, 2016 at 2:10

14 votes

What existing life on Earth is best suited for the Martian environment?

mars life astrobiology feasibility earth

answered Apr 28, 2015 at 18:15

14 votes

Were decommissioned Cold War missiles repurposed for peaceful spaceflight?

rockets technology reuse repurpose icbm

answered Sep 13, 2014 at 22:41

13 votes

Accepted

Would working at night on the surface of Mars/Luna protect from radiation?

colonization radiation space-weather

answered Nov 23, 2014 at 1:27

13 votes

Pushing down a projectile from LEO

orbital-mechanics

answered Apr 28, 2015 at 16:08

13 votes

If an unknown ship entered Earth orbit, would it be detected?

observation

answered Mar 7, 2015 at 17:57

13 votes

Accepted

Stripe of high def imagery on Google Moon

artificial-satellite the-moon imaging

answered Apr 1, 2018 at 23:06

12 votes

How could one navigate on Mars?

answered Dec 29, 2014 at 16:34

12 votes

Accepted

Apollo 17, Lunar Roving Vehicle walkback limit "relaxed"?

the-moon apollo-program lunar-landing

answered Mar 15, 2015 at 0:17

11 votes

Why does the International Space Station have a downward facing light?

iss observation

answered Oct 14, 2014 at 17:12

11 votes

Accepted

Can we not get outside the Local Galactic group?

probe interstellar-travel

answered May 31, 2016 at 1:38

10 votes

Accepted

What impact would a pea size meteor have when it hits the ground?

impact meteorites reentry

answered Nov 24, 2015 at 5:31

10 votes

Accepted

Copper abundance in the Moon

the-moon natural-resources

answered Feb 15, 2018 at 19:48

9 votes

How accurate are modern ephemerides, and how does their accuracy degrade over time?

orbit trajectory ephemeris calculation prediction

answered Nov 12, 2014 at 21:30

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79 Answers

Why are we trying to build a base on Mars before the Moon?

Why does the ascent stage of Apollo 11's lunar module look like it's made of paper?

How do we know the Apollo Moon landings are real?

Why are spaceship capsules frustum shaped?

What does 'Switch SCE to AUX' mean?

Is there any evidence that NASA was worried about deep lunar dust?

Dawn Spacecraft: Why are the orbits so high?

Which, if any, US laws apply on the ISS?

What is the largest hurdle of the mission to Mars?

How much power would a spacecraft's magnetic shield require?

What is the most heated exoatmospheric conflict to-date?

Why only 12 men have made lunar-walks and not all 18 men?

What term can we use to describe a planet's or dwarf planet's nearest distance to Earth?

Engineering difficulties towards near-perfect rockets?

What is the deepest part of the moon on the near side?

Could Starman get ejected from the Solar System?

Is this explanation for the SpaceX 1-Sept-2016 anomaly plausible?

What existing life on Earth is best suited for the Martian environment?

Were decommissioned Cold War missiles repurposed for peaceful spaceflight?

Would working at night on the surface of Mars/Luna protect from radiation?

Pushing down a projectile from LEO

If an unknown ship entered Earth orbit, would it be detected?

Stripe of high def imagery on Google Moon

How could one navigate on Mars?

Apollo 17, Lunar Roving Vehicle walkback limit "relaxed"?

Why does the International Space Station have a downward facing light?

Can we not get outside the Local Galactic group?

What impact would a pea size meteor have when it hits the ground?

Copper abundance in the Moon

How accurate are modern ephemerides, and how does their accuracy degrade over time?