There are three things in life that every human needs to survive: Water, air, and sandwiches. A good sandwich can make any day that much better, but sometimes you just aren’t in a great position to make one. Sometimes you’re in the car, on a train, or stuck on a spaceship. What do you do!? Luckily, Chris Hadfield, a Canadian astronaut who loves sandwiches as much as we do, has just uploaded a how-to video on making a perfect sangui in space. The guy has some serious sandwich-making skills, showing us all that gravity is totally over-rated. Also, in a scientific and nerdy type of way, he is hilarious. We thank you, Sandwich King of the Galaxy.