Imagine having an "eye" on the universe, being able to look out at a distant star or nebula with amazing clarity. With such a telescope, you could peer billions of light years away and see things that happened billions of years ago. Astronomers are doing just that with the Hubble Space Telescope!

Photo courtesy NASA / Space Telescope Science Institute (STScI)
Credit: NASA, A. Fruchter and the ERO Team (STScI)

The "Eskimo" Nebula (NGC2392)

What exactly is the Hubble Space Telescope? Why is it so special? How does it produce such amazing images and where can we see them? In this edition of How Stuff Works, we will look closely at this amazing instrument that has revolutionized astronomy!