Noctiluca by Hollis Frampton

Noctiluca is a silent film. It's composed of a series of circles resembling the earth's own moon. They are brightly colored, swerve in and out of the frame, and glide behind fencing and mesh as if rising into the night sky.

This film is about three minutes long. As it progresses, the colors shift from blueish purple to more reddish orange hues. As well as a color shift, the circles become more numerous and more frantic within the frame. They pass over each other, flash, disappear and flit in and out of frame with ease. 

The shapes themselves and the things they pass behind directly reference the moon, it seems. Honestly, though, it's disorienting. If there was some kind of distinct time element, like some kind of sound to ground the images, it would be a lot easier to digest overall.