What is the core of the galaxy like?

Factual Questions
1

Not right at the core where there is a super-massive black hole, but near there out to about 1000 LYs. How close are the stars to one another? What are their mechanics like? Do these stars have solar systems?

2

Here’s the center in visible light. Here’s a more detailed view: Milky Way Center Region Mosaic. There’s too much dust to see much, but that situation improves at other wavelengths:
X-Ray
Infrared
Radio

Here’s a description of the star population of the central cubic pasrsec.

3

The Grox are there making sure you don’t get to talk to Steve.

4

It’s grand, just watch out for the Raiel.