The sun and moon appear to be the same size in the sky because of an astonishing coincidence: the moon is 400 times smaller but 400 times closer.
J.K. Rowling became the first person to become a billionaire by writing books. However, she also lost her billionaire status because she donated so much money to charity!
The designer of the current United States flag was 17 at the time, and created it for a high school project. He received a B-.
The first commercial airplane flight lasted 23 minutes.