Several Circles, No. 323(1926) by Vasily Kandinsky, the transparent color circles float serenely across one another above an indeterminate, gray-black ground, like planets orbiting space. Kandinsky revered the circle as a link with the cosmic and as form that points to the fourth dimension. Finally, I personally love this work because of the feeling you are in space.
Here is more information about Vasily Kandinsky:
Here is a collection of his works: