Could NASA Start the Zombie Apocalypse?

The video explores the concept of a zombie apocalypse originating from space, highlighting how spaceflight can alter infectious diseases, making them more virulent. It discusses NASA's research on infectious diseases and the challenges of sterilization in space. The potential for space tourism to exacerbate disease spread is also considered, emphasizing the need for understanding disease dynamics in space.

What challenges does NASA face in researching infectious diseases in space?

What is the significance of the statement 'sterilization is impossible' in the context of space travel?