I saw a rectangular craft with strobing lights fly silently from south to north of my location. Was not starlink satellites!

This large craft moved quickly and silently across the night sky in front of me and was like nothing I've ever witnessed before. The horizon light offered back light to the object when it passed. I could clearly see the shape of the object which was a large, dark, long, rectangle with moving strobing lights that moved freely withing the boundary of the rectangle shape. It also seemed to be a bright spot or orb behind this object. I was able to take a short video after as the object hoovered out of my site. I have a few sisters with families who also observed this object except they live south of my location about 15 miles, and 30 miles.