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All-wavelength Extended Groth Strip International Survey (AEGIS)

Four orbiting telescopes, including Hubble, and four ground-based observatories sampled galaxies in a long, thin strip of sky to harvest clues about galaxy formation. Hubble's Advanced Camera for Surveys (ACS) snapped several hundred images of the survey field, which astronomers wove together into a rich tapestry that showcases about 50,000 galaxies. The Hubble views yielded new information about how the appearance and structure of galaxies change at different distances out in the universe.