while noticing the stars over my head disappear in the shape of a triangle three lights became visable and a center docking entrance,as it passed over heading due east so close I think a strong man with a bow and arrow could have hit it. it was huge. I also saw round porthole type windows and the shadow of human looking people looking out. the rear had rectangular lights sort of where you would look for rear thrusters. it was silent heading for the north entance of the underground base 80 miles west .