Here’s an excellent high definition video on the Hubble Ultra Deep Field images, with a 3D simulation that flies you through Hubble’s most awe-inspiring photographs.

The Deep Field images were created by pointing the Hubble Space Telescope for several days at a tiny patch of apparently empty sky — “empty” sky that turned out to be full of thousands and thousands of galaxies, each one containing hundreds of billions of stars. The light collected by the Hubble traveled for 13 billion years to reach the telescope’s CCD. It’s a snapshot of the universe when it was only 500 million years old.

Youtube Video