It was the 46th anniversary of the first moon landing on Monday.
Astronaut Buzz Aldrin, who was part of the Apollo 11 crew, shared pictures and memories of the historic event.
As did NASA.
Basically, a lot of people marked the anniversary of mankind's incredible feat of landing on the moon for the first time.
However, there are some out there who believe the landing was a hoax played out on a sound stage.