The S-IVB also ongoing to thrust at a very low level by venting gaseous hydrogen, to maintain propellants settled in 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 fuel tank. This venting thrust quickly exceeded aerodynamic drag

Map showing landing web site and pics taken Following about 7 several hours of relaxation, the crew was awakened by Houston to organize for your return flight. Two in addition to a half several hours later on, 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 with the