Credit: NASA, ESA, STScI
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 [https://hubblesite.org/contents/media/images/2005/12/1693-Image.html], V838 Monocerotis [https://hubblesite.org/contents/media/images/2005/02/1638-Image.html], the Hubble Ultra Deep Field (HUDF) [https://hubblesite.org/contents/media/images/2004/07/1457-Image.html], the Whirlpool Galaxy (M51) [https://hubblesite.org/contents/media/images/2005/12/1677-Image.html], Saturn [https://hubblesite.org/contents/media/images/2004/18/1545-Image.html], and the Orion Nebula [https://hubblesite.org/contents/media/images/2006/01/1826-Image.html] (M42).