Pilot Astronaut Flight Academy Chapter 0 - Introduction to PAFA 6 Lessons Free Pilot Astronaut Flight Academy Chapter 1 - Pilot Astronaut 2 Lessons Free Pilot Astronaut Flight Academy Chapter 3 - Spaceflight Physiology (1) 4.0 average rating 7 Lessons Free Pilot Astronaut Flight Academy Chapter 4 - Aircraft and Spacecraft Systems 10 Lessons Free Pilot Astronaut Flight Academy Chapter 5 - Atmospheric Flight 18 Lessons Free Pilot Astronaut Flight Academy Chapter 7 - Preflight Preparations 8 Lessons Free View more courses