[madbadgalaxyman (Robert)]

Greg,
I think the "rotation of the sky" or "rotation of the Earth" effect is really cool.

I have always wanted to see the rotation of the Earth in this way!

On a more serious note, this sort of thing, illustrating how the sky/earth moves, can have a real educational value.

cheers,
Robert

It can be hard for people to get their mind and imagination around the idea of the earth moving instead of the sky moving, despite the fact that we as a species have known this intellectually for a long time; this is a very good illustrative tool that shows the effect intuitively and dramatically.

Some of these skyscapes can be very useful for giving people an intuitive feel for what is going on in the universe.