In this July 20, 1969, photo made available by NASA, astronaut Buzz Aldrin Jr. poses for a photograph beside the U.S. flag on the moon during the Apollo 11 mission. Credit: Neil Armstrong | NASA via AP

Saturday marks the 50th anniversary of the moon landing, when Buzz Aldrin and Neil Armstrong walked on the moon, accompanied on the journey by Michael Collins.

It was an event that mesmerized people around the globe as the world watched the landing from their television screens.

Revisit some of the biggest moments from the Apollo 11 mission — from before takeoff to their celebration back home — in the photos below.

Before liftoff

Credit: NASA | MCT
Credit: NASA | MCT

The launch

Credit: NASA | AP
Credit: Ron Frehm | AP

The landing

Credit: Neil Armstrong | NASA via AP
Credit: Neil Armstrong | NASA via AP
Credit: Neil Armstrong | NASA via AP
Credit: Neil Armstrong | NASA via AP
Credit: Neil Armstrong | AP

The return home

Credit: Michael Collins | NASA via AP
Credit: Buzz Aldrin | NASA via AP
Credit: Milt Putnam | U.S. Navy via AP

The celebration

Credit: NASA via AP
Credit: File | AP
Credit: Fred Bunch | Houston Chronicle via AP
Credit: File | AP