On March 7, 2022, the Hubble Space Telescope marked the 20th anniversary of the installation of the Advanced Camera for Surveys (ACS). Mike Massimino, an astronaut who worked on the installation, noted on NASA's Hubblesite, "We knew ACS would add so much discovery potential to the telescope, but I don't think anybody really understood everything it could do. It was going to unlock the secrets of the universe."