Lights from space. Dont know what the arrow is pointing at, but The image right above it is almost censorable, says Freud.
Here is the source image. If you click on it, it gets really huge. https://commons.wikimedia.org/wiki/File:The_earth_at_night_(2).jpg There's some really fascinating stuff here.
Its probably an artifact of the fact that its a composite image. Thats why there is a sharp line. "This image of the Earth at night is a composite assembled from data acquired by the Suomi National Polar-orbiting Partnership (Suomi NPP) satellite over nine days in April 2012 and thirteen days in October 2012. It took 312 orbits...."
The DMZ / North Korea all dark and S Korea all lit up were easy to recognize. Why there's so many lights in the East China Sea is weird. Is that a MONSTER oilfield???
Steel, look at the formation above the arrow....Frued says starfish and roastbeef. Alomost needs to be censored/blocked out, lol....disgusting looking, haha, but its there