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The S-IVB also continued to thrust at a small level by venting gaseous hydrogen, to help keep propellants settled of their tanks and stop gaseous cavities from forming in propellant feed strains. This venting also maintained Risk-free pressures as liquid hydrogen boiled off during the gas tank. This venting thrust quickly exceeded aerodynamic drag.

Map displaying landing internet site and shots taken Soon after about 7 hours of rest, the crew was awakened by Houston to get ready with the return flight. Two as well as a 50 % several hours later, at 17:fifty four:00 UTC, they lifted off in Eagle's ascent phase to rejoin Collins aboard Columbia in lunar orbit.[145] Movie taken from the LM ascent