Course Corrections

A TV reporter became interested in the Apollo trips to the moon—what did they talk about? He was surprised to find how much conversation was devoted to course corrections. Apparently, the lunar spacecraft was off course something like 85% of the time. When I asked a friend who was heavily involved in the Apollo missions if this was true, he told me it was. Once leaving the earth's orbit, because of limitations of fuel, the spacecraft mostly drifted, unpropelled to the moon. But occasionally, small retro-rockets were fired to correct the course. It's not a bad description of the…