This is cute and all, but I was debating whether to run it on the blog or not when I got to the 1:05 mark or so, and decided to go ahead. Why? Watch:
Did you get the joke?
It's a Chandra X-ray Observatory image in the background if that helps. Note the cat.
Also, the next shot shown of a cat batting at Io was also pretty funny.
They did miss a sure bet, though: Cat's Eye, and the Cat's Paw nebula. Neither of which, I'll note, is in Leo.