How To Go To Space (with XKCD!)

The video explains the challenges of space travel, including overcoming Earth's gravity and achieving orbit. It describes the mechanics of rockets, known as 'up goers,' which use fuel to propel themselves into space. The video also covers the conditions necessary for human survival in space, such as life support systems and safe re-entry to Earth. Finally, it outlines the rigorous training and qualifications required to become an astronaut.

What new insight or understanding did you gain from this video?