Hey, space nerds! You've got till June 1 to show NASA what you're working with. If you don't deliver the CubeSat goods, you might as well kiss your intergalactic dreams goodbye. The SLS rocket is waiting, and it's not going to launch just any old cubesat into orbit - only the most tubular ones will get the green light. So, get cracking on those proposals and hope you're not stuck in a rut (literally, if you're planning to study the Moon).