21.   None of the other orbiters has the room in its cargo bay for the telescope and its propulsion system.

22.   No passengers ride in the cargo bay.

23.   No space is lost to the spare tire, which is housed under the floor of the roomy cargo bay.

24.   Once Endeavour reaches orbit, it is to deploy the boom almost immediately from a canister in its cargo bay.

25.   Once, on a flight back from Florida, the cargo bay opened and basketballs fell like inflated hail over the Gulf Coast.

26.   Once opened, the one-piece liftgate to access the cargo bay is difficult for short people to reach and close.

27.   Since the May crash, the FAA has banned oxygen generators from the cargo bays of passenger jets.

28.   That included installing a caged area that restricts access to cargo bays, securing cargo bays with electronic-coded locks and performing background checks on all employees.

29.   The astronauts wrestled with the suitcase-sized antennas as they pulled them through a narrow tunnel into the cargo bay.

30.   The cargo bay is tall enough to carry bicycles upright and wide enough to transport plywood.