Special Relativity

Five years alone in space. He had gone further, and seen more, than anyone ever had, but it was going to be nice to be home, to see his wife and infant son again.

As he landed his ship, he thought about some of the nonsense that people used to believe... Time dilation, evolution, quantum mechanics -- It was hard to imagine that humanity had ever really been that naive. Thankfully, scientists now focused on practical matters, instead of coming up with crazy theories.

As the astronaut left the capsule, an old man in a wheelchair called out, "Daddy, you're home!"