This one definitely stuck with me, I like how so many were compiled into this one video.
Here’s a great new video where this guy goes out onto a frozen lake in Canada and places 3 different lights. One at 8 miles, one at 7 and one at 6, they are all at equal distances and he records them with his camera.
No curvature, and all the lights are level with each other.
The video is over an hour long but within the first few minutes the results are apparent.