On this day, July 20, in 1969, the dream of many men and women throughout history came true: someone reached and walked on the moon. And no, it wasn't made of green cheese and did not have any forms of life or water on it. Astronauts Neil Armstrong and Edwin Aldrin were the first two human beings to walk on the moon. What was even more amazing was that this was viewed on television by millions of people around the globe. Our view of the world would never be the same.

One day before America entered World War II with the bombing of Pearl Harbor, the Manhattan Project officially began with President Franklin D. Roosevelt's approval over the objections of some scientists including Albert Einstein. J. Robert Oppenheimer was the project's scientific director. On July 16, 1945, the worlds' first atomic detonation takes place in the 'Trinity Test' at Alamogordo, New Mexico.