Craft was low overhead, made no noise. Made almost a right angle turn, never slowing down. 3 blinking lights

Was on my 9th floor balcony at around 9:30 PM on July 22, 2023. As I looked up, I saw some craft with 3 blinking lights on the bottom. The blink frequency was around 1 second or less. The colors were red, and either blue and white or both white, and they were very bright. Since it was dark, I could not make out the shape too well, but the blinking lights lit the craft up enough I could tell there were no wings and it seemed triangular with maybe a dome on top. I say a triangular shape because the three lights appeared to be in a triangular pattern.
I could tell this was flying fairly low, and I heard no noise at all coming from it. I watched it for about 10 seconds when it suddenly changed direction by 90 degrees and headed in the direction of State College. I watched it for another minute or so until it vanished over the horizon. I had a strange feeling in the pit of my stomach that this was not something I've ever seen before. There may be a terrestrial explanation for it though.
I did have my camera with me, but I was so enthralled by watching it, I forgot to get any pictures at first. By the time I thought of it, it was far enough away I didn't think it was worth taking.