Four of America’s best tell us where they were on that amazing day.

Read More: Astronauts explain why nobody has visited the moon in more than 45 years — and the reasons are depressing

A few months ago, ahead of the 50th anniversary of the first moon landing, eight of the 17 surviving Apollo astronauts gathered together for an early celebration at The Explorers Club in New York City.

The group was: Walter Cunningham (Apollo 7), Rusty Schweickart (Apollo 9), Buzz Aldrin and Michael Collins (Apollo 11), Fred Haise (Apollo 13), Al Worden (Apollo 15), Charlie Duke (Apollo 16), and Harrison Schmitt (Apollo 17).

Humans are preparing to build the first permanent settlement in space.

Apollo 11, Moon, panorama 360 16.07.

Unlike Earth’s northern & southern auroras, Jupiter’s auroras appear to behave independently of each other. Combining data from Chandra, NASA’s Juno mission, & ESA’s XMM-Newton observatory could help explain why!

As the first human beings stepped onto the Moon, the whole world watched in awe. Now, the #Apollo50th anniversary is being celebrated by those on AND off the world. NASA Astronauts Christina Koch and Nick Hague are celebrating on board the International Space Station. More: https://youtu.be/CIQMsI87jmA

Real-time data from the Apollo 11 astronauts, carefully monitored by Mission Control, capture the frenzied maneuvers that put men on the moon.