![]() Apollo 11 astronaut Buzz Aldrin stands next to a flag on the Moon on July 21, 1969. With 600 million people watching on television, Armstrong climbed down the ladder and declared: “That’s one small step for man, one giant leap for mankind.”Īldrin joined him soon after, and they explored what Aldrin calls the ‘magnificent desolation’ of the Moon for two and a half hours, collecting samples and taking photographs. The low fuel fear had been triggered by fuel sloshing in the lander’s tanks. Mission control erupted in cheers and claps as the tension lifted, and Duke told the crew, “You got a bunch of guys about to turn blue, we’re breathing again.” Post-flight analysis indicated that they had more fuel than they thought. ![]() “The Eagle has landed.” Systems Check 01 © Courtesy of Statement Pictures for CNN FilmsMacGillivray Freeman Films “Houston, Tranquility Base here,” said Armstrong. In the final seconds of the white-knuckle descent, the four-legged lunar module made it to the dusty surface.Īldrin: “Contact Light.” That meant at least one of the probes hanging from three of the craft’s footpads had touched the surface – they had landed on a site they would call Tranquility Base. Just after Armstrong asks “Okay, how’s the fuel?” and Aldrin replies “Eight percent”, Amstrong declares “Okay. And here we were, still a hundred feet above the surface, at 60 seconds.” “They probably normally expected us to land with about two minutes of fuel left. That, I’m sure, caused concern in the control centre,” Aldrin recalled. “We heard the call of 60 seconds, and a low-level light came on. ![]() With a rapidly diminishing fuel supply, they would soon reach the 60-second mark when they would have to abort the mission. It was just that they were flying this strange trajectory.” Lunar Surface © Courtesy of Statement Pictures for CNN FilmsMacGillivray Freeman Filmsĭuke recalled: “I started getting a little nervous, and they weren’t telling us what was wrong. They were confronted with a crater field and boulders measuring two or three metres in size, so Armstrong levelled off at about 400 feet to find a better spot to land. Just after Aldrin says “700 feet” Armstrong replies: “Pretty rocky area.” Geologist Eugene Shoemaker estimated that they were several kilometres downrange. The Eagle was coming in ‘long’ or downrange, overshooting the predicted landing zone. However, the Eagle was not where it was supposed to be, based on a grid in Armstrong’s window, scribed with vertical and horizontal scales, and cues from the computer. Mission control 02 © Courtesy of Statement Pictures for CNN FilmsMacGillivray Freeman FilmsĪldrin focused on the computer, instrument displays, calling off the numbers for altitude, speed and so on, while Armstrong took over manual control. It was safe for the Eagle to continue the descent. In Houston, Steve Bales, an expert in lunar module guidance systems, determined that the landing would not be put in jeopardy. The crew had not seen the 1202 alarm during simulations, which was triggered by data overflow in the computer. ![]() We got you… (‘with some urgency in his voice’) We’re go on that alarm.” The transcript of the first Moon landing records how commander Neil Armstrong ‘with the slightest touch of urgency’ said “Program Alarm.”Īrmstrong to mission control, in Houston: “ It’s a 1202.”Īrmstrong onboard, to Buzz: “What is it?”Īrmstrong would later reflect that landing was by far his biggest concern, saying “the unknowns were rampant,” and “there were just a thousand things to worry about.”Īrmstrong to Houston: “Give us a reading on the 1202 Program Alarm.”Ĭharlie Duke, the CapCom for the lunar landing: “ Roger. ![]() The Apollo Lunar Module, the Eagle, was at an altitude of 33,500 feet from the Moon’s surface, which by then could be seen in the very bottom of the window used by Buzz Aldrin, the lunar module pilot. While the tiny, fragile Apollo lunar lander descended rapidly to the Moon’s surface, its guidance computer disturbed the crew with several unexpected alarms. As part of our Summer of Space, Roger Highfield, Science Director, talks to Buzz Aldrin about the tense moments before the first lunar landing on July 20, 1969. ![]()
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