Did We Really Land on the Moon?

Logan asks: Did we really land on the moon and how do we know if we did? John says he believes an astronaut who's walked on the moon, but that's not enough. There is a satellite orbiting around the moon called the lunar reconnaissance orbiter which can actually see the footprints left by the astronauts because there's no atmosphere to blow it away. Logan also has questions about the atmosphere in space - take a deep breath with me, John.