28) Empirical evidence of an Expanding Universe

The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. Image credit (NASA, ESA, STScI) – Hubblesite.org: http://hubblesite.org/image/388/gallery

85 years ago, empirical evidence of an Expanding Universe is discovered. For the first time humans are aware they live in a developing universe.