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Johnny Robinson's user avatar
Johnny Robinson's user avatar
Johnny Robinson's user avatar
Johnny Robinson
  • Member for 7 years, 10 months
  • Last seen more than 1 year ago
38 votes
3 answers
3k views

Flung debris in lunar landing

38 votes
4 answers
1k views

How deep could a lunar mine go?

26 votes
6 answers
10k views

Why aren't rockets built with truss structures inside their fuel & oxidizer tanks to increase structural strength?

16 votes
2 answers
3k views

Why will the BFS reenter broadside rather than engine first?

14 votes
1 answer
6k views

Constant lunar sub-surface temperature

12 votes
1 answer
656 views

For a launch, how is safe viewing distance determined?

10 votes
2 answers
1k views

Range of BFR as single stage

10 votes
3 answers
709 views

Liquid settling in tanks during orbital refueling

10 votes
3 answers
5k views

Overcoming pressure differential to feed fuel into rocket engines

9 votes
1 answer
375 views

Lunar launch pad cooling

8 votes
2 answers
693 views

Progress of the raptor engine

8 votes
1 answer
573 views

Meteor color hints at chemistry

7 votes
1 answer
483 views

When will they be landing Dragon retropropulsively?

7 votes
2 answers
184 views

Angle of meteoroid and debris strikes on ISS

7 votes
1 answer
340 views

Has there been any program to develop tiny pod-like vehicles with manipulator arms for extra-vehicular activities?

7 votes
2 answers
1k views

Active liquid cooling for heat shield

7 votes
1 answer
118 views

Are new Falcon cores still being built at Hawthorne?

7 votes
1 answer
236 views

How many cargo flights are needed before Starship can carry people?

6 votes
2 answers
1k views

How much fuel, (in tons) will a dedicated tanker be able to deliver to a starship in LEO?

6 votes
0 answers
129 views

Can astronauts in currently planned pressure suits survive a cabin which cannot be repressurized?

6 votes
3 answers
2k views

New BFR Engine arrangement

5 votes
1 answer
4k views

Delta-V of Starlink Satellites

5 votes
1 answer
410 views

Power supply for StarShip?

5 votes
1 answer
354 views

Could a tank of water under the launch pad be used instead of a flame trench?

4 votes
3 answers
202 views

Redeployable solar arrays. Do they exist? or are they being worked on?

3 votes
1 answer
171 views

Have carbonaceous chondrite meteors been found on the moon?

3 votes
2 answers
374 views

Could a pressure suit be used for a short emergency EVA?

3 votes
0 answers
726 views

Safety of carbon fiber oxygen tanks

3 votes
1 answer
189 views

Chemical resources on the moon in relation to human occupation

3 votes
2 answers
246 views

Power requirements for solar electric interplanetary vehicle