This is not a night sky, it's a space sky, with highly visible galaxies. It won't make sense on Earth because you can't see galaxies with the naked eye, but shall work in space and on any astronomical bodies without or with thin atmosphere.
Also there's a problem with the permission sections in the text files. The outer text file, published with the archive, says:
which gives you limited permission to use the sky in your maps, but still not permissive enough to let you adapt the graphics to any modern rendering.
However, the internal (from the archive) text file says:
which, while suspicious of lack of attention on writer's part, on this current state it means that you just can't use these graphics in your mods. You can try to contact the author to get a permission, so there's that chance.
So which one is it? Because without further clarification, "yes AND no = no".
This is fairly straightforward, and most players should be able to complete it on UV in not much more than about 15 minutes. That's not to say it's a pushover - ammo is fairly tight for a good part of the map, and you could fall foul of some distant chaingunners if you're unlucky.
It's a sky texture replacement wad, it has several files for each iwad and pwad like Eternal Doom. It's a bit dated these days, but for true old-school feel it should be enough. If you feel tired of default sky textures in your iwad playthrough, load this and enjoy different view and feel.
I tried it years ago and was impressed... its actually made in EDMAP! The ancient map editor from hell itself.
But we really need an updated UDMF version of this
The 'other' startrek wad of old is also very good for its time
we need more startrek in doom
C'mon, is not that bad! There's so much doomcute here that i'll think that i start to have diabetes from all the sweetness lol. Even if big part of the movies are all "Oh My Goddess!" with wrong titles as well for the, the textures a cute cartoony design, even if pretty flat sometimes. The techno midi is awful. Overall cute map.
A fun trivia: iirc in the movie "7 doors of death" aka "The Beyond", near the end the main characters tries to escape from zombies (or they are possessed ghouls? I don't remember) and every time they using 3 shoots in total for all the time, using a revolver. Also that guys have a black and red mimetic like dress, like a certain monster in a certain game....