Mark C. Lee, STS-82 payload commander, training for extravehicular activity (EVA) involved with servicing the Hubble Space Telescope (HST), prepares to enter the Neutral Bouyancy Laboratory (NBL) water tank at the Johnson Space Center (JSC). Moments later, Lee was neutrally buoyant, rehearsing some of the HST servicing tasks with a crewmate.
Credit: NASA
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