Hubble Ultra-Deep Field
Photographer: NASA/ESA Hubble
Date: 2003-2004
Location: Fornax constellation
Between September 2003 and January 2004, the Hubble Space Telescope observed a small region of sky in the Fornax constellation in the Southern Hemisphere, accumulating approximately 800 exposures over 400 orbits of Earth. The resulting Hubble Ultra-Deep Field reveals approximately 10,000 galaxies at various distances and stages of development, some as they appeared just 400–800 million years after the Big Bang. At the time of its release in March 2004, it was the deepest visible-light image of the cosmos ever produced, surpassing the original Hubble Deep Field from 1995. The image covers an area approximately one-tenth the size of the full Moon and has been foundational to modern cosmology.
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