Though he was born two years after the Apollo 11 astronauts' landmark voyage, Elon Musk said, "Landing on the moon was probably the most inspiring thing in history.
Musk is the founder, CEO and lead designer of SpaceX (short for Space Exploration Technologies).
"I kept expecting that we would continue beyond Apollo 11, that we would have a base on the moon, that we would be sending people to Mars," Musk said.
Which is why SpaceX is one of the companies that delivers cargo to the International Space Station, while the Russians transport crews.
Apollo 11 lifted off from pad 39A, the rocket launch site that is hallowed ground at the John F. Kennedy Space Center in Florida, and many NASA lunar landing and orbital missions began there.
It's the first private company to launch, orbit and recover a spacecraft; and accomplished the first landing of an orbital rocket's first stage on an ocean platform.
Of course, Elon Musk says his real objective is changing how people will travel in space.