Translucent Shapeshifting craft moving at impossible speeds

My brother and I were standing in the backyard of our suburban home at approximately 22:28 on April the 25th. We had our telescopes set up for a night of astronomical observations. I was looking north-east trying to get the globular cluster M13 in the eye piece when my brother exclaimed “Dude what is that?”. I turned my head north and saw high above us a translucent craft moving at approximately five hundred knots due west. It was if 20 or so smaller lights were traveling in perfect sync with each other in the shape of a V. It created an atmospheric disturbance that made it look similar to a nebula. We both were caught in both shock and slight horror. It made no sound, left no contrail, and was below the higher stratus clouds. It moved west for approximately ten to fifteen seconds and disappeared. We initially suspected it to be some Russian Spy plane. I immediately called my significant other and while describing what I saw, the craft returned. This time it was flying north to south. It began to shape shift into a straight line, a triangle, and almost a bird like shape. It moved for 20 seconds in an erratic flight path before disappearing behind some trees on the western horizon. We stood in our backyard dumb struck for a couple hours waiting to see if it would return. But it never did. Our dog was upset for a couple hours after the event as well. She kept coming up to us and crying.