I was very busy at the time that these pics were taken so i have very limited information to add other than what is witnessed in these photos. firstly, the terrain here is flat. the "lit" sky in the pic is not caused by a back-lit mountain range or anything of the sort. there is nothing physical to obstruct light across the horizon. it simply should not be there. it was not raining. there were no visible clouds that i noticed. my whole involvement of this episode started for me when i walked outside. someone close to me turned and said, "wow, look at that sky...I wonder what that is?" i looked, snapped some pictures, and thought that the whole night sky seemed abnormal. there are a lot of street lights around where i was standing so there is a lot of ambient light. the "lit" sky was still very visible despite this and so were many of the lights in the sky. the red light could have been an airplane. (i have no idea). what struck me as odd, other than the back-lit sky, was that the other lights in the sky were so bright. much more bright than normal when compared to normal night sky stars. and much too bright for all of the ambient light in my area. because i was so busy, i walked back inside shortly after taking these pictures so i don't know how long it lasted or how it dispersed. what i can say is that this was observed the in nj night sky as i was pointed towards pa, probably wsw. it was descent amount south of the direction of the phl airport. also, the demarcation of light across the sky was not as defined with the naked eye as what the camera pic actually reproduced. other then what i described here, i don't think that there is much else that i can add to the event. i just thought that maybe that if other people experienced the same event, that maybe this can corroborate their experience too.