S116-E-05579 (11 Dec. 2006) --- Astronaut Sunita L. Williams (left) and Joan E. Higginbotham, both STS-116 mission specialists, float arm-in-arm near Space Shuttle Discovery's hatch, which leads into the International Space Station. Rendezvous and docking operations between the shuttle and station occurred at 4:12 p.m. (CST) and the crew entered the orbital outpost at 5:54 p.m. (CST) on Dec. 11.