Apollo 11 astronauts returning to launch pad 50 years later

This photo released by NASA shows the crew of the Apollo 11 lunar landing mission L-R Neil Armstrong, commander, Michael Collins, command module pilot and Edwin E. Aldrin Jr, lunar module pilot, 01 May 1969. The date 20 July, 1999 marks the 30th anniversary of the Apollo 11 mission and man's first walk on the Moon. AFP PHOTO NASA (Photo by NASA / NASA / AFP) (Photo credit should read NASA/AFP/Getty Images)

CAPE CANAVERAL, Fla. — Apollo 11’s astronauts are returning to the exact spot from where they flew to the moon 50 years ago.

NASA has invited Buzz Aldrin and Michael Collins to Kennedy Space Center’s Launch Complex 39A on Tuesday. They will mark the precise moment — 9:32 a.m. on July 16, 1969 — that their Saturn V rocket departed on humanity’s first moon landing. Mission commander Neil Armstrong — who took the first lunar footsteps — died in 2012.

It kicks off eight days of golden anniversary celebrations for each day of Apollo 11’s voyage.

Also Tuesday morning, 5,000 model rockets are set to launch simultaneously at the U.S. Space and Rocket Center in Huntsville, Alabama. At the National Air and Space Museum in Washington, Armstrong’s newly restored spacesuit goes on display.

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