Dark Triangle with Large Round White Circles at Corners

Out on back deck looking at Mars and the Moon. Sitting there 5 min. I see something to my left coming from the North at high speed, just zipped right over our house and was gone. At first I thought a commercial drone but no navigation lights and ZERO sound. ZERO sound. A Triangle with rounded corners, gun metal gray or black, undercarriage large white circles near each corner but not illuminated. The white circles looked like a dome bathroom light that wasn't lit. Size, I am unsure of due to lack of depth perception at night. If it was 100 ft up it would have been 2ft across, if 500 ft. would probably have been the size of a large Uhaul truck, 1000 ft. an 18 wheeler truck/trailer. I immediately came back into the house as it gave me the hibbies.