As far as I know, nobody so far has actually experimentally investigated martial arts in a weightless environment, other than under water. This article concerns constraints and opportunities presented by unarmed combat in zero-G environments without a spacesuit being involved. If one includes a spacesuit then we are in a situation analogous to knights in armor, where the only realistic option is a weapon, probably a reactionless pistol based on the Gyrojet. What is not an option are the “space axes” of the 1940s SF writer E E “doc” Smith! While some insights can be gained by practicing in a swimming pool many crucial features of true freefall are missing,…