Direction Lighting Inside

I did a lot of reading on this but a lot of the answers were pretty old and no one seemed to have a solid solution to it. I’m using a directional lighting in my scene of a ship overlooking a planet. The directional lighting is messing up my lighting inside and I can’t turn it off or else the planet goes dim. Any ideas welcome

Directional lighting on:

(Imgur: The magic of the Internet)

DL off:

Why do you think it is “messing up” ?

In the first picture, the “Cast Shadows” box is unchecked. Is the concern that it’s too bright in the ship?