Franck Dernoncourt's user avatar
Franck Dernoncourt's user avatar
Franck Dernoncourt's user avatar
Franck Dernoncourt
  • Member for 10 years, 3 months
  • Last seen this week
16 votes
3 answers
2k views

How much do orbital debris cost annually to satellite operators?

14 votes
2 answers
7k views

Why does Blue Origin claim Virgin Galactic's spaceplane doesn’t have an escape system whereas Virgin Galactic's passengers are wearing parachutes?

10 votes
1 answer
4k views

Does SpaceX expect 1 collision involving one of their Starlink satellites every 2 years?

5 votes
1 answer
705 views

Why must passengers in Blue Origin flights be able to climb seven flights of stairs at the launch tower in less than 90 seconds?

5 votes
1 answer
172 views

Why does it take Spaceway 1 (satellite) two or three months to dump 73 kg of bipropellant?

5 votes
1 answer
783 views

Do the passengers in Virgin Galactic's VSS Unity spacecraft have a parachute or some other way to escape the spacecraft if needs be?

4 votes
0 answers
165 views

Which components are non-reusable after a sub-orbital spaceflight with Virgin Galactic?

4 votes
0 answers
158 views

Do space transportation firms such as SpaceX receive a financial compensation if a launch is cancelled because of an airplane entering the launch zone

4 votes
1 answer
445 views

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

3 votes
1 answer
3k views

Why do AST SpaceMobile satellites have antennas much larger than Starlink, whereas they both aim at providing network coverage anywhere on earth?

2 votes
2 answers
2k views

Can the Tirada-2S satellite communications electronic jamming system be used to jam the Starlink network?

2 votes
0 answers
176 views

Why did Blue Origin make 5 times more flight tests than Virgin Galactic before sending their founders (Jeff Bezos for BO, R. Branson for VG) to space?

2 votes
1 answer
538 views

Are Virgin Galactic tourists asked to take a 6 to 8G centrifuge test to qualify, and if so, what's the point?

2 votes
1 answer
209 views

How long do the ascent and the descent of Virgin Galactic's spacecraft take?

1 vote
0 answers
68 views

What percentage of the population can pass Virgin Galactic's training sessions for tourists to board a sub-orbital spaceflight?

1 vote
3 answers
247 views

What kind of badge will tourists who performed a sub-orbital spaceflight receive?

0 votes
1 answer
338 views

Why isn't the engine's Case-Throat-Nozzle reusable in Virgin Galactic's SpaceShipTwo?