News Planetary Science Pluto’s posse By Ron Cowen March 7, 2006 at 12:13 pm - More than 2 years ago Share this:Share Share via email (Opens in new window) Email Click to share on Facebook (Opens in new window) Facebook Click to share on Reddit (Opens in new window) Reddit Click to share on X (Opens in new window) X Click to print (Opens in new window) Print Images taken by the Hubble Space Telescope on Feb. 15 have confirmed that Pluto has two small, previously unknown moons. First detected by Hubble last year (SN: 11/5/05, p. 291: New Partners: Hubble finds more moons around Pluto ), each moon is only about 50 kilometers across, less than one-hundredth the size of Pluto’s giant moon Charon.