who was the first person to step on the moon?
Neil Alden Armstrong
Neil Armstrong
Neil Alden Armstrong (August 5, 1930 – August 25, 2012) was an American astronaut and aeronautical engineer, and the first person to walk on the Moon. 
when was the first moon landing and what was the name of the spacecraft July 20, 1969 and  Apollo 11 who were the crew members? Neil Armstrong and Buzz Aldrin where there any backup crew members? Yes, Lovell, William Anders, and Haise what was their call sign? "Snowcone" was used for the CM and "Haystack" was used for the LM in both internal and external communications during early mission planning.
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Neil Armstrong [SEP] Introduction
Neil Alden Armstrong (August 5, 1930 – August 25, 2012) was an American astronaut and aeronautical engineer, and the first person to walk on the Moon. He was also a naval aviator, test pilot, and university professor. A graduate of Purdue University, Armstrong studied aeronautical engineering; his college tuition was paid for by the U.S. Navy under the Holloway Plan. He became a midshipman in 1949 and a naval aviator the following year. He saw action in the Korean War, flying the Grumman F9F Panther from the aircraft carrier . In September 1951, while making a low bombing run, Armstrong's aircraft was damaged when it collided with an anti-aircraft cable, strung across a valley, which cut off a large portion of one wing.