I imagine being an astronaut is a high-stress occupation. Despite being quite literally a dream job for many at NASA, there’s no question that every launch requires a thousand things to go right, and anything that goes wrong can mean serious trouble. With that kind of pressure, you almost have to have a sense of humor to lighten the atmosphere now and then. Apparently, one way the NASA folks blow off some steam is by creating silly posters for the individual missions that reference everything from Star Trek to The Matrix to Harry Potter.
My biggest question? I wonder how many of those astronauts had to rent Starfleet uniforms, and how many of them already had them in the back of their closet… You can check out even more of the posters below, courtesy of Space.com.