Neil Armstrong and Buzz Aldrin walk on the moon for the first time
On July 20, 1969, Neil Armstrong stepped onto the Sea of Tranquility, becoming the first human to stand on another world. He and Buzz Aldrin spent just over two hours walking the lunar surface while an estimated 600 million people — roughly a fifth of humanity — watched or listened live. A quiet, staggering moment in our species’ long outward reach.









