It's hard to believe that given the glacial pace of change in the universe, in my lifetime - a mere fraction of a blink of an eye in cosmic terms - we've managed to lose a whole planet.
There's a lot of gnashing of teeth going on regarding the recent demotion of Pluto, Thinking of the Children, and what this will do to all their textbooks, which are now all outdated. And then I realized that it's not really too bad; the kids will be able to deal. After all, when I was growing up I had one of my cousin's old kids' space books. He's 12 years older than me and didn't really need it anymore (it wasn't exactly on his college reading list...). Anyway, I remember flipping through it and noting the page where it said that, "Someday we'll land on the moon!"
I think the book is packed away in a box somewhere so that someday I can pass it on to my kids...