50 years ago, on July 20th, 1969, Commander Neil Armstrong and lunar module pilot Buzz Aldrin, both American, landed the Apollo Lunar Module Eagle on the moon.
Here's a list of what some of rock's top acts were doing when it happened:
Ace Frehley: Says he watched it with his classmates in school. Unless he is referring to Sunday school, then he is living up to his nickname of "Spaceman" as July 20th was a Sunday in 1969.
Billy Gibbons: Was watching B.B. King perform in Houston, and the "King of the Blues" announced that Apollo 11 had landed.
Blind Faith: Were performing at the Baltimore Civic Center!
Carlos Santana: It was his 22nd birthday and he was performing with his Santana band in San Francisco.
Deep Purple: Were performing in Birmingham, England.
Grateful Dead: Watched it at Jerry Garcia's house as he was the only one with a TV.
James Taylor and Van Morrison: Were on the bill at the Newport Folk Festival in Rhode Island. The announcement that Apollo 11 had landed was made during Taylor's set.
Joe Cocker: Was performing at the Fillmore West in San Francisco.
Led Zeppelin: Were performing in Cleveland on a bill with the James Gang.
Mick Jagger: Was filming Ned Kelly in Australia.
Pink Floyd: Performed "Moonjam" for a BBC TV show on the Moon landing.
The Beatles: Watched a rough cut of their film that came to be known as Let it Be.
The Who: Were performing in Hastings, England.
Tommy Shaw: Was 14 and watched it with his family in Montgomery, Alabama.
Yes: Watched it in a pub in Cork, Ireland following their set.