That actually truly was intended to not be a light source. It's supposed to be behind the girl; can't you see the lit up part on the top of her head? It was c&p'd from a picture of the Earth and her face is where the dark side was.
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.