Apollo 11 is a story well-documented. But with so many people involved in the mission and the immense influence of the Moon landing, some facts have fallen into relative obscurity. Here are a few that you might not know.
Neil Armstrong's "one small step for man" wasn't small at all. He had to drop about 3 1/2 feet from the foot of the Eagle's ladder to the surface.
They could have been locked out. When lunar module pilot Buzz Aldrin joined Armstrong on the Moon's surface, he had to make sure not to fully close the Eagle's hatch because the cabin would start repressurizing, making it difficult to re-enter.
Between 1969 and 1972, astronauts left behind more than footprints -- mostly things to help save weight for takeoff. Things like rovers, descent and ascent stages, astronaut boots, and a gold replica of an olive branch.
The Command Module cabin was about as roomy as a large car.
Pink Floyd jammed the tune "Moonhead" during the BBC's live television coverage of the Moon landing.
The American flag planted on the Moon by the Apollo 11 crew was likely purchased at a Houston Sears store by a NASA secretary.
In 2019, 50 years after the famed landing, six teams of scientists began to examine one of three caches of lunar regolith from Apollo missions that have been stored at NASA's Johnson Space Center since 1972. The last pristine Apollo sample was opened for investigation in 2022.
The Apollo Guidance Computer weighs 70 pounds, yet it was less powerful than today's smartphones.
In 2015, University of Oxford physicist David Robert Grimes, Ph.D., developed a mathematical model determining that if the U.S. Moon landings were faked by the government, an estimated 411,000 people would have been in on the hoax, and at least one person would have leaked the conspiracy within 3 years and 8 months.
Apollo engineering influenced a lot of technologies and products, such as freeze-dried backpacking meals, Dustbuster cordless vacuums, Nike Air running shoes, anti-fog ski goggles, and studless winter tires.
The first supper on the Moon was the Last Supper. Shortly before stepping on the Moon, Buzz Aldrin took the rite of Christian communion, consuming the sacraments of wine and bread that he brought on board.
Eagle Scout Neil Armstrong earned 26 merit badges (21 are required), but not the Space Exploration merit badge. It wasn't created until 1965.
While many believe Armstrong said "one small step for man," Armstrong later said that he in fact did include "a man" in the quote but the audio cut out. It's been intensely investigated for decades.
The Saturn V rocket that launched Apollo 11 burned through 203,400 gallons of kerosene fuel and another 318,000 gallons of liquid oxygen to lift the spacecraft just 38 miles into the sky.
If the Saturn V rocket had exploded, it would have created a fireball in excess of 2,500 degrees Fahrenheit.
Upon returning to Earth, Apollo 11 astronauts were quarantined for two weeks in case they had been contaminated with dangerous pathogens.
President Richard Nixon's speechwriter drafted a just-in-case address, July 18, 1969. "IN EVENT OF MOON DISASTER: Fate has ordained that the men who went to the moon to explore in peace will stay on the moon to rest in peace. These brave men, Neil Armstrong and Edwin Aldrin, know that there is no hope for their recovery. But they also know that there is hope for mankind in their sacrifice..."
The mission was so dangerous, the astronauts couldn't get life insurance. So they each autographed hundreds of philatelic "covers," envelopes their friends had postmarked on July 20, 1969, which they knew their families could sell to collectors to fund their kids' college educations if they did not return.
Aldrin threw a Buzz uppercut. In 2002, the former astronaut punched a documentary maker who poked him with a Bible and demanded he swear the Moon landing wasn't staged.
Sorry, hoax theorists: NASA's Lunar Reconnaissance Orbiter Camera took photos of the six American flags left on the Moon. Five are standing, but Apollo 11's was knocked down by takeoff thrust.