The International Astronomical Union announced yesterday that the names Kerberos and Styx have officially been recognized for the fourth and fifth moons of Pluto, previously referred to as P4 and P5. This Hubble image shows five moons orbiting Pluto (NASA / ESA / M. Showalter, SETI Institute) P4 and P5 were discovered in 2011 and 2012, during observations of the Pluto system made with the NASA/ESA Hubble Space Telescope. Kerberos lies between the...
