Johnny Robinson's user avatar
Johnny Robinson's user avatar
Johnny Robinson's user avatar
Johnny Robinson
  • Member for 6 years, 1 month
  • Last seen more than a month ago
20 votes
Accepted

After Crew Dragon launch abort, was Falcon 9's detonation intentional?

12 votes

Titan vs Mars for colonization

11 votes

What are the advantages and disadvantages of using either liquid hydrogen or liquid methane based rocket fuels?

10 votes

Puzzler - which spacecraft(s) incorporated real wood structural elements?

10 votes
Accepted

Have there been any other "camsats" besides Banxing-2?

10 votes

How (actually) do sub-cooled propellants reduce cavitation within turbo pumps and make feed easier?

7 votes

Has any living thing been directly exposed to the vacuum of space

7 votes

Has any living thing been directly exposed to the vacuum of space

6 votes
Accepted

Can a flock of birds crash a rocket?

5 votes

Would a Martian landing and take off require a flame trench/deflector?

5 votes
Accepted

Short documentary about spacesuit seamstresses

4 votes

Why is there a "coasting" phase in some space launches?

4 votes

Why can't we deorbit to earth more gently?

3 votes

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

3 votes

Why would SpaceX not use parachutes for the final descent of the first stage?

3 votes

When launching a ship meant to colonize a planet beyond our solar system, what would be the best location for the launch?

3 votes

What are the challenges of a large Bola style Habitat

3 votes

Using asteroids as propellant source

3 votes

Can we set up an orbiting transporter between Earth and the Moon?

3 votes

Could a framework of mirrors static in space above the Lunar south pole illuminate a moonbase there continuously?

3 votes

Can the SpaceX Dragon 2 crew vehicle still use the draco and super draco thrusters to slow down when landing?

3 votes

Why do space settlement designers use tori instead of cylinders for space settlements?

3 votes
Accepted

Why aren't there carbonate rocks on the moon?

2 votes

White papers on alleged 1960s Chinese wooden ablative reentry heat shield

2 votes

To what extent, if any, does the exterior paint color of a launch vehicle affect its propellant & vehicle thermal management?

2 votes

Do current plans for people going to Mars by SpaceX depend only on consumables loaded from Earth?

2 votes

For the purposes of attitude control, do gyrodynes need to be placed at the center of mass?

2 votes

Details of Apollo 11 video transmission

2 votes

Generally, what types of sensors are used in rocket guidance systems?

2 votes

Do electronics and mechanical components work in a vacuum or require a sealed controlled atmosphere?