Multiple bright dots in the sky like stars in the afternoon bright blue sky. They appeared to be moving in the same direction but they also moved in and out amongst themselves rather than remaining in fixed formation. They were very bright and like nothing i have seen before.Then as we watched, they seemed to dim and disappear, perhaps moving away from us. It was difficult to gauge either size or actual distance but they were clearly round bright dots. They appeared to be moving slowly but then so do planes. Without a sense of scale it's impossible to tell.