♪ >> this is, of course, the great day for mankind when we leave our planet earth and set foot on the moon. so on this historic day neil armstrong and buzz aldrin are in their lunar module in their space suits. on this next pass, they are preparing to undock. >> all spacecraft looking very good at this time. the following revolution, revolution 13, armstrong and aldrin, they will undock from the command and service module, from which point the power descent to the lunar surface will be initiated. >> apollo 11, houston we're going for undocking. over. >> roger, understand. >> we're all set when you are, mike. >> there you go. see you later.