Two very large bursts of light, in rapid succession.When I looked out a large window, the sky was very dark (window looks out on several miles of open fields, with low hills, the Pelham range in the distance). There were two bursts of light that occurred in very rapid succession. They seemed to appear from just on the other side of the hills and were impressively large. It was a quiet night here, no noise was audible, and that seemed to be it. Given the distance from the occurrence though, this had to be something major, yet I can find no instance of an explosion or accident.