Among the images that symbolize the accomplishments of manned spaceflight is this one of Neil Armstrong on the surface of the Moon on July 20, 1969. I was born just a couple of months after that historic event, so, to me, growing up, a lunar landing was never the stuff of science fiction. Rather, I thought it to be a small, first step toward a coming giant leap for mankind. Back then, I fully expected that, by the time the year 2000 (or, perhaps, 2001) rolled around, we'd have a moon base and be exploring the rest of the solar system, not with robot probes but with human beings like the courageous Neil Armstrong, who died last Saturday at the age of 82. And while I fully understand why that childhood dream has not come to pass, I can't deny that I'm still disappointed. Here's hoping that, before I die, I might once again marvel at the heroism of men walking on the surface of a world other than our own.