"Galileo-kun and his friends", the mascot characters of the IYA2009 Japan Committee, will tell you wonderful stories and introduce you to the wonderful world of starry skies and astronomy!
"Galileo-kun and his friends" are mascot characters of IYA2009 Japan. These friends who are always with Galileo-kun are called Io (a bird), Europa (a cat), Ganymede (a dog) and Callisto (a horse). They are named after the four largest satellites revolving around Jupiter. These are also called the "Galilean satellites" because they are discovered by Galileo with his telescope. His discovery of these satellites revolving around Jupiter was one of the strong evidences to support the Copernican theory.