I found the top drawing of these two among some old papers. I'd guess it was drawn when I was six or seven, and just becoming aware of the natures of space, the planets and so on. I'd seen some artwork online that parents had done where they took their kids' drawings and worked them up. (It didn't say how the kids felt about this!) I thought I'd try it with some old drawings of my own, and it's an interesting experience. Working on the old drawing, I find, reminds me how I felt and thought at that age. This would have been at the time of the last Apollo missions, and I was probably looking forward to being an astronaut myself.