"Skylab contained laboratories, sleeping and rest areas; there was even a shower – a design that even those with only a tentative understanding of weightlessness can see is deeply flawed. Above the compartments there was an open area where astronauts could enjoy the thrills of microgravity aerobatics. “Compared to the space capsules that astronauts were used to,” says Neal, “it was like being in a house.” “Skylab gave us a taste of what it would be like to have a permanent human presence in space,” she adds. “In many ways the ISS is Skylab multiplied – building up the modules like Lego into a larger unit.”"