Watch full episodes and play Ready Jet Go! games at http://pbskids.org/readyjetgo !
The kids explain to Mindy that the Earth moves around the Sun and not the other way around. Sean shows up as his favorite astronomer, Galileo! He then explains to the kids why Galileo is his favorite.
Watch and play more games at http://pbskids.org or download the *FREE* PBS KIDS Video and Games app at http://pbskids.org/apps/
