Strange Encounters Four scientists relive a key moment in their discipline. 4/4. On the Revolutions of Astronomy In 1610, Galileo peering into the night sky with his hand-made telescope discovers four strange stars that will destroy the old concept of the Universe. But his abrasive attitude soon brings him into conflict with others, even his supporters, such as Jesuit astronomer Father Orazio Grassi. Written by Brother Guy Consolmagno.