Simplify the following text for a Grade 11 native English-speaking person.
Original: Neil Alden Armstrong ( born August 5 , 1930 ) is an American aviator and a former astronaut , test pilot , aerospace engineer , university professor , and United States Naval Aviator .
Simplified: Professor Neil Alden Armstrong was born on August 5th 1930 in Ohio and grew up on a farm with his grandparents in the United States . He was an American astronaut , an American aviator and a former astronaut , test pilot , aerospace engineer , university professor , and United States Naval Aviator and the first person to set foot on the Earth 's moon .