Originally Posted by
SteppingItUp 
I'm also curious to know how people chose their avatars. I picked mine because a woman I know told people that I look like the girl in this painting. It's "Lady with an Ermine" by Leonardo da Vinci. He lived in my city for a long time, and he's also my hero.
I change my avatar often, but try to stick with an astronomy theme.
Da Vinci is my favorite artist and inventor, I've been fascinated by his work since I was a young kid.