 Larger living areas on the Skylab space station (1973–1974) allowed for an on-board refrigerator and freezer, which allowed perishable and frozen items to be stored and made microgravity the primary obstacle.When Skylab's solar panels were damaged during its launch and the station had to rely on minimal power from the Apollo Telescope Mount until Skylab 2 crewmembers performed repairs, the refrigerator and freezer were among the systems that Mission Control kept operational.Menus included 72 items; for the first time about 15% was frozen.