The Hubble Space Telescope Pluto Companion Search Team examined Pluto and its already-known moon [[Charon]] using the [[Hubble Space Telescope]]'s Advanced Camera for Surveys.<ref name=team1/> The stated discovery date of May 15, 2005 is the date that the discovery images were taken; the discovery was announced only after confirmatory comparison with previous images of the Plutonian system.<ref name=hubble/> | The Hubble Space Telescope Pluto Companion Search Team examined Pluto and its already-known moon [[Charon]] using the [[Hubble Space Telescope]]'s Advanced Camera for Surveys.<ref name=team1/> The stated discovery date of May 15, 2005 is the date that the discovery images were taken; the discovery was announced only after confirmatory comparison with previous images of the Plutonian system.<ref name=hubble/> |