20:49

Viewer Questions Episode 5

18:42

XB-1 Baby Boom Goes Supersonic - Jet Planes, Starlink & iPhones

19:27

Heat Shields, VASIMIR and Hydrogen Peroxide - Supporter Questions Episode 11

9:26

Ex-Black Hawk helicopter pilot believes three things went wrong in plane collision

19:20

Where Will Astronauts Go After The ISS Is Destroyed?

15:47

Far Future Rocket Engine Technologies - Fission, Fusion & Antimatter

15:14

Answering Questions - Episode 1

19:44

Deep Space Questions - Episode 8 - Heavy Payloads, Cool Rockets & The Most Difficult Question Yet