Level River St's user avatar
Level River St's user avatar
Level River St's user avatar
Level River St
  • Member for 9 years, 7 months
  • Last seen this week
  • Madrid, Spain
36 votes
Accepted

How close can I get to a rocket launch and not get killed?

32 votes

Has any spacecraft ever been flown manually to orbit?

18 votes

Why 31 engines for the BFR?

15 votes

Could the Moon keep an atmosphere?

15 votes

Why is SpaceX's Raptor's design so simple in comparison to SSME?

12 votes
Accepted

Why not use tap-off gas for repressurization for a simple rocket engine cycle?

11 votes

What are the top temperatures occurring during reentry?

11 votes

Has humanity launched a SSTO ... ever?

11 votes

How does SpaceX plan to deal with boiloff on the trip to Mars?

11 votes

Why aren't we sending quadcopters to mars?

10 votes
Accepted

What if an engine fails to ignite on Falcon Heavy?

10 votes

Why did it take so long for methane to be used as a rocket propellant?

8 votes
Accepted

What are some of the important parameters to scaling a liquid rocket engine

7 votes

Does the NK-33 engine require subcooled kerosene so cold that it turns to wax?

6 votes
Accepted

Why did August 28th, 2019 Starhopper's test roll so much to the left?

6 votes
Accepted

Why did SpaceX choose vertical integration for Starship?

6 votes

Why is the American space program launch site based in Florida and not Texas?

4 votes

Why not land SpaceX's Starship like a plane?

4 votes

Are there liquid fueled rocket boosters having coaxial fuel/oxidizer tanks?

3 votes

Do any rocket engines besides the F1 need/require baffles?

3 votes

Pressure inside Starship CH4 and LOX header tanks during entire Earth-Mars trip and landing on Mars?

3 votes

How much delta-v can we squeeze out of a gravitational slingshot and what factors limit it?

2 votes

How great is the stress on a rocket at max-q

2 votes

How many space launch vehicles are under development worldwide?

1 vote

Is it possible to use gases instead of liquids as fuel in a rocket engine?

1 vote

Why is SpaceX not also working on a smaller version of Starship?

1 vote

Exactly why does Starship need to be this big for interplanetary travel?

1 vote

Finned heatsinks in space

1 vote

How much of an advantage do equator-proximal launch sites provide?

1 vote

Why rockets are not tossed up before launch