Upon returning home with my family from dinner, my wife spotted a very large black triangular craft hovering roughly 500ft above a residential area. it had large white solid lights on each of the three corners of the craft and a pulsating red light on what appeared to be the rear. we could actually see framework or something on the side facing us, which indicted it wasn't a smooth surface but rather a metallic structure. as i turned north into the subdivision it made a turn toward the ne and, after a few seconds without making a sound, it ascended to a tiny point in the sky in an instant. at the moment is took off into the sky, the sky seemed to bend around the lights of the craft. before, during and after the sighting we could see normal aircraft in the sky, as there is a close-by small commercial airport. i cannot imagine no one else, particularly pilots, didn't see this craft. it was enormous.