The 1977 short "Powers of Ten" continues to stand out as just one of the coolest educational films of all time. While our understanding of the micro and macro worlds has improved a little since it was made, the overall message about size and scope of our universe continues to stand the test of time. But don't take my word for it. You'll find the full video in this post. If this is your first time viewing "Powers of Ten," then you're in for a real mind-blowing treat. Hold onto your cerebral cortex, kids.