Increase the magnitude limit for stars. (F7)
Mine didn't come out like yours... What else do I have to do? I copied the F7 settings...
You may also need to customize the appearance of the stars (Ctrl F4) And the screen resolution may also play a role.
That's already implemented, isn't it? Planets get warmer as you lower the semi-major axis and cooler as you raise the semi-major axis, so a habitable zone forms out of that.I wonder if you could add something very simple yet great for a Program like SpaceEngine. The inner and outer habitable zone. So basically the Habitable zone. I think it would be an interesting addition and I'm sure but I would assume it would be easy to implement.

Sorry, I forgot that I use modified star shaders.
is it supposed to look like this?
I do not quite understand what you mean.
The file you gave me, the star-shadder thing. Is it supposed to look like that.I do not quite understand what you mean.
You have to put the .pak file in a folder named 'addons'.
This folder is located in the top level of your SpaceEngine installation.
If this folder does not exist, you must create it.
The name of the file is 'star_shaders.pak'.
It should look like this: