Before Neil Armstrong and Buzz Aldrin knew they would be the first to walk on the moon, they took crash courses in geology at the Grand Canyon and a nearby impact crater that is the most well-preserved on Earth.
Northern Arizona has had deep ties to the Apollo missions: Every moon-walking astronaut trained here, and a crater on the moon was even named in honor of the city of Flagstaff.
“It’s a really interesting and unique part of our history, and it’s really cool to think that this relatively small town in northern Arizona played such a big role in the Apollo missions,” said Benjamin Carver, a public lands historian at Northern Arizona University.
Today, astronaut candidates still train in and around Flagstaff, which is among many cities celebrating the 50th anniversary of the first moon landing on July 20, 1969.
Full Coverage: Moon landing anniversary
They walk in the same volcanic cinder fields where the U.S. Geological Survey intentionally blasted hundreds of craters from the ground to replicate the lunar surface, testing rovers and geology tools.
Scientists used early photos of the moon taken from orbit and re-created the Sea of Tranquility with “remarkable accuracy” before Apollo 11 landed there in 1969, the Geological Survey said.
Astronauts studied moon mapping at Lowell Observatory in Flagstaff where Pluto was discovered and peered at their eventual destination through telescopes at various northern Arizona sites.
The region’s role in moon missions is credited to former Geological Survey scientist Gene Shoemaker, who moved the agency’s astrogeology branch to Flagstaffin 1963. It wasn’t long before Shoemaker guided Armstrong and Aldrin on hikes at Meteor Crater as he pushed to ensure NASA would include geology in lunar exploration.
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