User Woody

56 votes

Accepted

Why aren't spacecraft and spacesuits pressurised to 2.5 psi (17 kPa) of pure oxygen?

answered Jan 3 at 17:13

36 votes

Would a broken arm/ leg be more painful in zero gravity?

health

answered Dec 13, 2021 at 19:34

28 votes

Shouldn't space junk fall back to Earth on its own? How long will take for a ~1 cm piece of junk in LEO to fall back to Earth on its own for example?

orbit low-earth-orbit debris earth drag

answered Nov 30, 2021 at 23:20

23 votes

JWST - Why unfurl before reaching L2?

james-webb-telescope

answered Jan 21 at 20:05

22 votes

Accepted

Can an ISS module survive reentry?

iss nasa reentry

answered Nov 9, 2021 at 3:22

21 votes

Why did a solar eclipse of the sun as seen from Apollo 11 appear to have an elliptical corona?

the-moon apollo-program apollo-11 solar-eclipse

answered Jan 6 at 1:29

19 votes

Accepted

What is the equation that relates delta v of a rocket to time taken to complete an orbit?

orbital-mechanics orbit propulsion orbital-maneuver delta-v

answered Dec 16, 2021 at 4:14

11 votes

Accepted

What are the characteristics of JWST's orbit around L2?

lagrangian-points james-webb-telescope

answered Jan 7 at 22:38

11 votes

How will JWST come to rest at L2?

orbital-mechanics

answered Dec 31, 2021 at 23:00

10 votes

Is an orbital insertion burn part of any launch from earth

launch orbital-maneuver terminology

answered Nov 8, 2021 at 5:40

9 votes

If you release a tool outside the ISS in space will it remain at the "same" place forever?

orbital-mechanics iss velocity in-space-repairs tools

answered Nov 1, 2021 at 17:43

9 votes

Do other planets and moons share Earth’s mineral diversity?

planetary-science geology

answered Nov 1, 2021 at 19:16

9 votes

Accepted

Why are the JWST secondary mirror support booms not painted black?

james-webb-telescope

answered Jan 5 at 20:47

8 votes

Accepted

Can gas bubbles form in the fuel and oxidizer rocket engine pumps due to insufficient flow from the tanks?

rockets engines turbopump

answered Jan 21 at 20:19

8 votes

Accepted

How much algae would you need to fully support a person?

life-support oxygen food long-duration

answered May 2 at 16:16

8 votes

If we pick any point on the moon (except possibly the poles), is the sun visible for 13.66 days, and then not visible for 13.66 days?

the-moon solar-power

answered Nov 21, 2021 at 7:20

7 votes

Accepted

Why is NASA choosing such a large “halo” orbit at L2 for JWST?

orbital-mechanics james-webb-telescope

answered Jan 10 at 0:29

6 votes

How does gravity change beyond L2?

orbital-mechanics physics gravity lagrangian-points

answered Jan 7 at 22:32

6 votes

What does it mean to tune the Saturn F-1 engine to a frequency, and how is the tuning done?

apollo-program history engines saturn-v

answered Mar 17 at 23:26

6 votes

Why did Luna 1 enter a heliocentric orbit?

the-moon orbit luna

answered Nov 6, 2021 at 4:45

5 votes

Accepted

Experience of breathing regular air vs. Nitrox vs pure oxygen at 4.3 psi?

astronauts spacesuits oxygen

answered Oct 26, 2021 at 23:53

5 votes

Why end-of-life GPS satellites given orbits that seemingly still intersect active satellite orbits but with a different period? Recipe for disaster?

orbital-mechanics safety gps end-of-life medium-earth-orbit

answered Dec 12, 2021 at 18:20

5 votes

Pressurized Organic Oxygen Pods

colonization life-support humans oxygen waste

answered May 3 at 1:37

4 votes

Insights about launch vehicle engine configuration

launch rockets engines engine-design launch-vehicle

answered May 3 at 5:22

4 votes

Resources on Coking?

rockets engines kerosene

answered May 4 at 20:50

4 votes

How brightly does Venus's hot surface glow at night? Could you see it? Could you see well enough to walk around?

crewed-spaceflight planetary-science venus thermal vision

answered May 3 at 0:52

4 votes

Can there be color blind astronauts?

crewed-spaceflight astronauts space-station medical

answered Dec 14, 2021 at 1:17

3 votes

Isometrics in zero gravity

microgravity health reduced-gravity-sports

answered Dec 14, 2021 at 14:41

3 votes

Are any space agencies working on an (essentially) 100% reliable sterilization technique for spacecraft bound for subsurface ocean worlds?

design mission-design deep-space planetary-protection forward-contamination

answered Nov 14, 2021 at 8:32

3 votes

What was the flight path of China's hypersonic missile that circumnavigated sometime in summer 2021?

china weapon supersonic

answered Nov 18, 2021 at 22:47

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67 Answers

Why aren't spacecraft and spacesuits pressurised to 2.5 psi (17 kPa) of pure oxygen?

Would a broken arm/ leg be more painful in zero gravity?

Shouldn't space junk fall back to Earth on its own? How long will take for a ~1 cm piece of junk in LEO to fall back to Earth on its own for example?

JWST - Why unfurl before reaching L2?

Can an ISS module survive reentry?

Why did a solar eclipse of the sun as seen from Apollo 11 appear to have an elliptical corona?

What is the equation that relates delta v of a rocket to time taken to complete an orbit?

What are the characteristics of JWST's orbit around L2?

How will JWST come to rest at L2?

Is an orbital insertion burn part of any launch from earth

If you release a tool outside the ISS in space will it remain at the "same" place forever?

Do other planets and moons share Earth’s mineral diversity?

Why are the JWST secondary mirror support booms not painted black?

Can gas bubbles form in the fuel and oxidizer rocket engine pumps due to insufficient flow from the tanks?

How much algae would you need to fully support a person?

If we pick any point on the moon (except possibly the poles), is the sun visible for 13.66 days, and then not visible for 13.66 days?

Why is NASA choosing such a large “halo” orbit at L2 for JWST?

How does gravity change beyond L2?

What does it mean to tune the Saturn F-1 engine to a frequency, and how is the tuning done?

Why did Luna 1 enter a heliocentric orbit?

Experience of breathing regular air vs. Nitrox vs pure oxygen at 4.3 psi?

Why end-of-life GPS satellites given orbits that seemingly still intersect active satellite orbits but with a different period? Recipe for disaster?

Pressurized Organic Oxygen Pods

Insights about launch vehicle engine configuration

Resources on Coking?

How brightly does Venus's hot surface glow at night? Could you see it? Could you see well enough to walk around?

Can there be color blind astronauts?

Isometrics in zero gravity

Are any space agencies working on an (essentially) 100% reliable sterilization technique for spacecraft bound for subsurface ocean worlds?

What was the flight path of China's hypersonic missile that circumnavigated sometime in summer 2021?