A 3D-printed espresso cup that was created by a mechanical engineering graduate student and his professor at Portland State University was modified to brew fresh coffee aboard the International Space Station by astronaut Kjell Lindgren. The unique geometry of the cup creates a capillary pressure gradient that moves liquid up and at the face of the drinker, while the liquid's natural surface tension holds it inside of the cup. By using a syringe filled with hot water and a K-cup type coffee pack, astronauts can now enjoy brewed coffee in a zero gravity environment. You can read more over at 3DPrint.com: http://3dprint.com/122145/coffee-in-space/