Great Observatories Origins Deep Survey (GOODS)
Hubble, the Chandra X-ray Observatory, the Spitzer Space Telescope, and several ground-based observatories were part of a collaborative deep-sky survey to study galaxy evolution. The GOODS observations cover a broader section of the sky than the deep fields, though the deep field observations reveal fainter objects. Gazing into that region, the GOODS collaboration uncovered about 50,000 galaxies that stretch far out in space. Hubble's Advanced Camera for Surveys (ACS) sampled about 25,000 of those galaxies, including several thousand that are more than 10 billion light-years away.