NASA designated this mission CRS-4, but it is number 1 in the hearts of scientists who are seeing their experiments fly to the station for investigations. The gear being taken up on this flight will allow the completion of 255 research projects which will focus on everything from the Earth’s winds to the way bone density is affected on a molecular level in microgravity and how drugs could affect the deterioration. There’s also a 3D printing system (pictured) to be evaluated in orbit and an experiment to examine how electroplating changes when performed in microgravity.