Hubble's Advanced Camera for Surveys (ACS) forever changed our view of the universe. Two decades into its epic mission, ACS continues to deliver ground-breaking science and stunning images. ACS has taken over 125,000 pictures and spawned numerous discoveries. Here is a portfolio of some of the ACS's most striking images. In this six-panel collage, the photos are (left to right): the Spire in the Eagle Nebula, V838 Monocerotis, the Hubble Ultra Deep Field (HUDF), the Whirlpool Galaxy (M51), Saturn, and the Orion Nebula (M42).
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NASA, ESA, STScI
