Large shape changing triangular orb like light rays producing object

Around 11pm my fiancé saw why he thought was a very bright star. I told him no? It must be a plane as I saw it moving. We started watching further and saw a large, sometimes triangular, sometimes orb like, object/mass that was staying stationary in the sky but sometimes moving closer/farther. With various light rays at different times. We used a gun spotter scope to see closer and observed a large orb like object that sometime appeared triangular like with various light ray like things at what would be the “points”. At the end of its dissapearancd it had a large blue like light trail before departing. Also, when we zoomed into it 40x zoom it appeared to be a large grey swirly like “disc”