Mission Specialist Bonnie Dunbar smiles as she completes the donning of her launch entry suit in the Operations and Checkout O&C Building.

STS-89 Mission Specialist Bonnie Dunbar, Ph.D., smiles as she completes the donning of her launch/entry suit in the Operations and Checkout (O&C) Building. Dr. Dunbar completed her doctorate at the University of Houston in Texas. Her multi-disciplinary dissertation (materials science and physiology) involved evaluating the effects of simulated space flight on bone strength and fracture toughness. She and six fellow crew members will shortly depart the O&C and head for Launch Pad 39A, where the Space Shuttle Endeavour will lift off during a launch window that opens at 9:43 p.m. EST, Jan. 22. STS-89 is the eighth of nine planned missions to dock the Space Shuttle with Russia's Mir space station