Riding the vomit comet | Ariel Ekblaw and Lex Fridman

TL;DR

Astronaut shares her experiences of weightlessness in microgravity and zero gravity during parabolic flights and in orbit, highlighting the unique sensation and the physiological effects on the body.

Transcript

i believe that uh there's a picture of you floating in microgravity uh when when did you get to experience that what was that like yeah so i've flown nine times on the affectionately known as the vomit comet it's the parabolic flight and essentially it does what you'd want to play never to do it pitches really steeply upwards at 45 degrees that's a... Read More

Key Insights

• 🧑‍🚀 The astronaut has flown multiple times on parabolic flights to experience weightlessness and microgravity.
• 🍉 Microgravity is the accurate term, as there is always gravity in the universe.
• ❓ Experiencing weightlessness is a profound and unforgettable sensation.
• ✈️ Parabolic flights provide a temporary experience of weightlessness, while being in orbit brings physiological changes to the body.

Questions & Answers

Q: What is the difference between microgravity and zero gravity?

Microgravity is the more accurate term, as there is always gravity attraction between objects. Zero gravity is a shorthand used to communicate weightlessness to the public.

Q: What is it like to experience weightlessness for the first time?

It is a profound and extraordinary sensation, similar to floating in a pool but with unrestricted movement and no resistance. It requires minimal energy to move and leaves a fleeting memory.

Q: Is experiencing weightlessness biologically stressful?

While there is a 2g pullout during the parabolic flights, it is not considered biologically stressful. It is more of a novel and unique experience rather than a physically demanding one.

Q: What are some differences between parabolic flights and being in orbit?

In orbit, astronauts experience the stunning "overview effect" and can see the Earth as a blue marble. Physiological changes, such as bone and muscle transformation, occur during long-duration space flights and pose unique challenges.

Summary & Key Takeaways

• The astronaut has flown nine times on parabolic flights, experiencing weightlessness and microgravity.

• There is a difference between microgravity and zero gravity, as there is always gravity in the universe according to Newton's law.

• Experiencing weightlessness is profound and unlike anything on Earth, with no drag and unrestricted movement.