Returning home from grabbing dinner (10:30pm). I'm walking to my apartment and looking up at the night sky. In last 3 years I've twice seen a black triangle fly overhead on moonless nights (I reported both events to MUFON). Every time I am out at night, on moonless nights, I spend time looking for these objects. So as I walk towards my apartment I stop and look up. I noticed something crossing infront of stars. I immediately see a object in shape of triangle with grey markings underneath. The markings look like X's in the pattern of a flock of birds. I notice this object is lower than I've ever seen it. I figure 1000ft or less. Probably 500-700 ft. I also listen for noise and hear nothing. This object was big, bigger than a small plane. If I had to estimate size it is between a fighter jet (F-16 and jumbo jet). The speed of the object was between 80mph-150mph. Again, no noise or appearance of jet flame. There were no lights on the object. Only when it crosses infront of stars is it visible. The markings are visible underneath it but if you were not looking at object directly they would be hard to see. Again this is my 3rd sighting of this object in 3 years. All times at night and on moonless nights.