Pope cancels visit to German university after protest over his views on Galileo . Benedict XVI due to give speech at banners in Vatican 1633 . Academics said pope condones 1633 trial and conviction of Galileo for heresy .
Pope cancels visit to Italian university after protest over his views on Galileo . Benedict XVI due to give speech at La Sapienza university in Rome Thursday . Academics said pope condones 1633 trial and conviction of Galileo for heresy .