This is a video based on images taken from the Hubble Space Telescope. The first part looks at the Hubble Deep Field (HDF), see the actual image below. The image, taken in 1995 over a ten day period, covers a segment of the sky equivalent to about the width of a dime seen from 75 feet away. To the naked eye, it is a blank piece of sky. Hubble found around 3,000 galaxies, at varying distances and at various stages of evolution.
The second part looks at the Hubble Ultra Deep Field (HUDF), again I show the actual image below. The image, taken in 2003/4, covers a segment of the sky equivalent to about one twelfth that of the HDF. This time, with improved resolution, Hubble found around 10,000 galaxies. Some are so distant, we see them as they were near the beginning of the Universe when they were just starting to form. To cover the entire sky at the same resolution would take nearly one million years of uninterrupted viewing!
It ends with an animated journey through the Ultra Deep Field image. The animation uses the actual measured redshift of each of the 10,000 galaxies in the HUDF from the perspective of the Hubble telescope, as if one could fly along the line of sight.
The HUDF has been described as "the single most important image ever taken by humanity". I think it is awesome; I hope you agree.
Hubble Deep Field The original Hubble Deep Field (HDF) image, taken in 1995 and released 1996. It covers approximately one millionth of the sky.
Hubble Ultra-Deep Field The more recent Hubble Ultra-Deep Field (HUDF) image, taken over 11 days of observation between September 24, 2003 and January 16, 2004, shows more than 10,000 galaxies.