November 20, 2008 5:10 pm Astronomer Explains Mystery Lights, Possible Causes The strange lights seen over some of the area Wednesday night weren’t UFOs but most likely light reflecting off moisture in the atmosphere, according to Derek Pitts of the Franklin Institute. US & World Videos 0:35 Fans of ‘The Office' got to see some of the stars at Fan Expo Philadelphia on Saturday 2:32 Rainy, chilly weather didn't stop many from enjoying festivals throughout Philadelphia 0:29 Driver found safe after carjacking in Delaware 2:23 Teen killed in quadruple shooting in North Philadelphia on Saturday evening 0:39 Teen shot near church in West Philly, two in custody
