Did you know that there was once a sit-down strike in space? It's true. This strike occurred on the Skylab 4 flight in December 1973. Ground control in Houston was trying to make this final space mission as profitable as possible. They scheduled the astronauts' days so tightly that they were even forbidden to participate in their favorite pastime ” watching the sun and the earth. Houston daily "sent up about six feet of instructions to the astronauts' teleprinter." The civilian physicist on board begged ground control to give the astronauts a break. He suggested they send a bare framework of a schedule, together with a shopping list of things for them to do, and then let the guys on board figure out the best way of doing them. When Houston decided against letting the astronauts design thei…