After returning to and repressurizing the Lunar Module, we were able to drain and measure the remaining water in the backpacks to confirm the predicted."Īrmstrong went on to say that, had there been more free time, he and Aldrin would have liked to explore more of the lunar surface. "We did not have any data to tell us how long the small water tank in our backpacks would suffice," Armstrong wrote. "NASA officials limited our surface working time to 2 and 3/4 hours on that first surface exploration to assure that we would not expire of hyperthermia.
In his reply, Armstrong, who was commander of the Apollo 11 flight, explained the main reasons for traversing such a small distance, which include the extremely high temperatures on the lunar surface, uncertainties surrounding how the astronauts' spacesuits with their water-cooled interiors would hold up, and requirements from NASA that the two astronauts perform experiments in front of a fixed camera.
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