UFO Sighting in Yellowknife, Northwest Territorie on 2004-09-03 00:00:00 - Huge dome-like object hovering and glided away over treetop

Me and my buddy, as we were walking to my home, out of nowhere this huge maybe the size of a football stadium dome-like or egg shaped object appeared approximately 1-2 miles in front of us over treetop, the whole object/surface was lighted and glowing, we just stood there in shocked. it was hovering and gliding top of tree it made no noise or sound and it just glided away behind the tree, and about 20-30 seconds later it came out the same way again like it just flew in a circle, then it stop and hovered for about 10 seconds and it shot straight up into the sky.