Everyone now has heard about and seen many incredible images from the Hubble Space Telescope.
Not as many understand or have much grasp of what this device has taught us about our universe. I recently encountered this web page that has a very clear and concise explaination of how Hubble has changed our view. You owe it to yourself to follow that link and read that page. This is a very powerful new perspective, as the universe is much bigger and more populated than we thought. There is an embedded YouTube video at the bottom of the page that is well worth watching, and is a great piece to share with your friends that may want to appreciate Hubble, without having to become an astrophysicist. More amazing Hubble images can be found on this STSCI web site.