Mysterious bright spot may be geological activity on Titan
                                
                                
                                    (Newser) -
                                    Astronomers are feeling giddy about a flash of light on a very odd moon,  phys.org  reports. Radar images show that a bright object appeared briefly on Saturn's moon Titan, possible proof of geological activity on a lunar surface that boasts wind, rain, lakes, and seas (though liquid methane...