Hubble Deep Field:

 The Hubble Deep Field is the deepest view of the 
 Universe ever obtained. This image was recorded by the 
 Hubble Space Telescope over a period of ten consecutive 
 days in December, 1995. The very faintest galaxies 
 visible in the image are some four billion times fainter 
 than the faintest objects that can be seen by the naked 
 eye. The most distant galaxies detected in the Hubble 
 Deep Field, which are visible in the image as small red 
 dots, are some 15 billion light years away, at the very 
 edge of the observable Universe. 

 (Light from these very distant galaxies was emitted some 
  15 billion years ago, soon after the Big Bang).