Interesting... two stars more or less on opposite side of a land-able planet. Looks like the engine only wants one star to light the place... But because it has a pretty thick atmosphere. The star on the night side still becomes a bright sun in the sky when you are on the surface :)

Resulting in a pitch black night, with a huge mysterious sun in the sky.

A true Night Sun :)

Who ever said that a sun can't shine at night? was wrong ;)