I just getting ready for bed when a strange object appeared in the sky outside my bedroom window. at first i thought it was just a reflection on the window but as i looked closer i could see that it was a series of lights. there were maybe 20 lights, all closely grouped together, they moved like a snake through the sky. their movements were jerky and their shap reapidly fluxiating. this was visible for about 20-30 seconds before all the lights simply disappeared.