UIDAlexD's user avatar
UIDAlexD's user avatar
UIDAlexD's user avatar
  • Member for 7 years, 8 months
  • Last seen more than 3 years ago
  • REDACTED, United States
28 votes

Why does the Falcon 9 use RP-1/LOx and not LH2/LOx?

10 votes

Tiny emergency propulsive device if stuck floating in a large volume in microgravity

10 votes

Can the James Webb Space Telescope basically manage its own orbit if necessary?

9 votes

Making propellants on Mars: Why not just LH2/LOX instead of methane?

8 votes

Is it possible for something to fall straight down to earth? What are the requirements?

6 votes

Are and should satellites use wireless communication internally, rather than cables?

5 votes

Never reducing propellant for space propulsion

3 votes

Power requirements for zapping debris with lasers from ISS

2 votes

What limits the speed of space probes currently?

2 votes

Are the Boeing CST-100 Starliner and Orion MPCV interchangeable at any level?

1 vote

Could cosmic rays be produced by alien propulsion systems?

0 votes

Would reusability affect the performance of a rocket engine compared to a single launch version of that rocket engine