I took some screen shots from last night's episode, just to look at. sorry they're so large. Click for bigger.
The last is my favorite. The return of the original Raider! It looks like in the circle there are both new and Old Raiders. I wonder what that means.
In the first, if you look middle right-hand-side, you can see a Baseship for size reference. It looks like the baseship itself could fit in that entrance no problem.