I was driving home the evening of thursday, december 21, 2017 coming off of rt. 33 north to leighton exit and was struck by how bright a star was (there were two stars next to each other but one was brighter than the other). i thought they were stars since they were not moving, i looked to see where the moon was and it was on the opposite side from them. as i was staring up at the brightest of the two stars the one to the right which was the very bright one started to dip or so that i could actually see the shape which was a fat triangle with rounded tips to the triangle instead of points. as i was watching this still trying to decipher what i was actually viewing (and it wasn't a plane not moving just a second of dip to see shape) it dipped to the other side then upright again. as it dipped for a few seconds i saw the underside to have three large circle of lights at each rounded tip. i then had to keep driving so i don't know what happened after that. it was not moving at all and was definitely very bright like a star but dipped and swayed to show shape of a fat triangle with rounded tips and at each tip circular set of lights. i felt that i looked for anything that it could be and it didn't fit any of those things -- not a plane, not a star, not a shooting star, not the moon