The Northern lights are cool but this might top it. Apparently the Chicago Skyline was visible 60 miles away in Michigan because of something called Fata Morgana. Basically it's an optical bending of light caused by air temperature over bodies of cold water and happens in the spring. In the radio world we have something like this called Dxing where sometimes you can pick up FM signals from very far away. My furthest 2 finds were a station from Las Vegas and one from out east. Anyhow, check out the video from Chicago HERE!