Crowds are gathering across the United States to commemorate the 50th anniversary of humanity's first moon landing. Cars were reportedly backed up for miles on Saturday outside NASA's Kennedy Space Center in Florida, while runners competed in a "Run to the Moon" race in the late Neil Armstrong's hometown of Wapakoneta, Ohio, and visitors flocked to the Museum of Flight in Seattle. The surviving Apollo 11 astronauts, Buzz Aldrin and Michael Collins, reunited on Friday when they gathered in the Oval Office with President Trump, who reportedly received a rundown on his administration's plan to get astronauts back on the moon by 2024. Armstrong's sons were also in attendance.

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