Now you can see what Neil Armstrong saw as he landed the Apollo 11 lunar module, known as the Eagle, on the surface of the moon on July 20, 1969.
The new view comes courtesy of NASA's Lunar Reconnaissance Orbiter (LRO), which has been circling Earth's nearest neighbor since 2009.
"Most people are familiar with the 16mm movie of the Apollo 11 landing," said Mark Robinson of Arizona State University, leader of LRO's Lunar Reconnaissance Orbiter Camera (LROC).
"However, that viewpoint was looking out the right window, entirely missing the hazards that Armstrong saw as the Eagle approached the surface," Robinson added. "The LROC team simulated what Armstrong saw out his window."
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"The only visual record of the historic Apollo 11 landing is from a 16mm time-lapse (6 frames per second) movie camera mounted in Buzz Aldrin’s window (right side of Lunar Module Eagle or LM)," LROC team members wrote in a description of the new video on Tuesday (July 16). "Due to the small size of the LM windows and the angle at which the movie camera was mounted, what mission commander Neil Armstrong saw as he flew and landed the LM was not recorded."
The LROC team reconstructed the final three minutes of the Eagle's landing trajectory.
"From this trajectory information, and high-resolution LROC NAC [Narrow Angle Camera] images and topography, we simulated what Armstrong saw in those final minutes as he guided the LM down to the surface of the moon," the team members wrote.
The video begins when Armstrong could see that his automated aim point was on the rocky northeastern flank of the 620-foot-wide (190 meters) West Crater. That was not a great landing spot, so the astronaut took manual control and flew horizontally, searching for a safer place to touch down.
"At the time, only Armstrong saw the hazard; he was too busy flying the LM to discuss the situation with mission control," LROC team members wrote.
To make the new video, the LROC team used a time-synchronized version of the original 16mm film and the First Men on the Moon website, which synchronizes the air-to-ground voice transmission with the original 16mm film.
You can see the new video at the LROC site.
"Be sure and check out the three alternate versions of the video posted at the bottom of the Featured Image," Robinson said, "especially the two-astronaut version: 'What Armstrong and Aldrin Saw: Simulation vs. Original Film.'"
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Leonard David is author of the recently released book, "Moon Rush: The New Space Race" published by National Geographic in May 2019. A longtime writer for Space.com, David has been reporting on the space industry for more than five decades. Follow us on Twitter @Spacedotcom or Facebook.