We had gone up to a mountian side to watch the city lights. We were getting our lawn chairs from out of the pickup when my companion noticed somthing moving above and behind the mountian. It was contrasting agianst the sky. The object wich shape i was unable to make out was darker that the dusk sky. It seemed to float and move frm north to east slowly . Then it was gone it didnt disapear but it faded away. We dont know what it was but it was strange enough that my friend and i had to tell someone