illusions

Majorsteve put up a post about this illusion a couple weeks ago. I remember commenting - Are those circles supposed to be moving??

My science teacher showed this to us today. If you look at the whole picture the circles move. If you focus on one circle, the whole picture is still. Cool, huh?

This one scares the heck diddly ding dong crap out of me... check it out...     

   

Stare at the 4 dots in the middle 4 about 30 seconds. Then close your eyes and tilt your head up. You probably wont freak out like me. 

Then, tell me what you see.