the alignment stability of the Atlantis-Mir docked configuration and the remote communication systems. A series of jet firings by both Mir and Atlantis evaluated the dynamics of the complicated structure, which at more than 500,000 pounds, set a new record for a conjoined orbital mass. Atlantis Undocking Atlantis undocked with the station early in the morning of November 18. Once the Orbiter was 525 feet out, he began a fly around, taking a photographic survey of the station. Four and half hours after undocking, Cameron lowered Atlantis to another orbit. Two days later, on November 20 at 12:02 EST, the Orbiter Atlantis landed at Kennedy Space Center in Floriday, ending a 128 orbit mission after 8 days, 4 hours and 31 minutes. November 18 - December 19, 1995 Euromir Experiments Resume After the Space Shuttle departure, the Mir 20/Euromir 95 crew continued with their medical tests and material processing experiments. In addition to equipment brought on board for Euromir, Reiter used the Austrian Optovert equipment that had been on Mir since the Austro-Mir mission in October 1991. He investigated the effects of weightlessness on human motor system performance and the interactions of the vestibular system and visual organs. Gyrodyne Maintenance and Second Mir 20 EVA The cosmonauts performed preventative maintenance on the Kvant 2 gyrodynes in late November, using the attitude control jets to maintain station orientation while the gyrodynes were inactive. On December 8, the crew reconfigured the docking port at the front of the Mir base block to prepare it to receive the 1996 Priroda module. They moved the Konus docking unit from the +Z to the -Z docking port where Priroda would attach in the spring. Progress M-29 Departs Progress M-29 departed the station on December 19. It undocked from the rear Kvant port and deorbited over the Pacific Ocean. December 20, 1995 - February 22, 1996 Progress M-30 resupplies Euromir 95 Progress M-30 was launched from Baikonur Cosmodrome on a Soyuz-U rocket on December 18. It docked with the same port Progress M-29 departed from on December 20 with 2300 kg of fuel, crew supplies, and research/medical equipment for use on the extended Euromir 95 mission. Experiments continue Reiter took biomedical samples and measurements and tested the capacity of uncooled melts in the TITUS materials processing furnace. The Russian cosmonauts studied microgravity effects on hydrodynamics with the Volna-2 device, using models of spacecraft fuel system elements.