Fifty years ago, the Apollo project sent 27 astronauts to the Moon. I was a child and followed their live broadcasts on TV together with my father, an aerospace engineer in the then-nascent European space program. The Lunar exploration lasted for four years and eleven launches, after which the United States retrenched to a more modest space program. Hopefully, I will see astronauts on the Moon again some day, perhaps in the company of curious and eager grandchildren.