Loading video... VIDEO: In 2003, Hubble captured its iconic Ultra Deep Field image, which changed our understanding of the universe. With 100 times more coverage, imagine what we could learn if the Nancy... view more Credit: NASA's Goddard Space Flight Center One of the Hubble Space Telescope's most iconic images is the Hubble Ultra Deep Field, which unveiled myriad galaxies across the universe, stretching back to within a few hundred million years of the Big Bang. Hubble peered at a single patch of seemingly empty sky for hundreds of hours beginning in September 2003, and astronomers first unveiled this galaxy tapestry in 2004, with more observations in subsequent years.