This is the continuation of a thread of related posts on a hypothetical alternate universe/Light Plane.

Other posts from this thread are here: How To Make an Earth with 27 Suns Work

Radiation Levels and Effects on Planet with 27 Suns

This thread is related to this one, with modifications (hence the name, "attempt two") It is not a duplicate because the previous one was "impossible." This has been modified to try to make the hypothetical situation possible. I changed some of the physics and specifications. I also stopped editing my previous post because it would have invalidated (all) the answers.

Background information

This is a setting in which a planet is in orbit of a star/stars in a solar system/tightly packed globular cluster with 27 suns. (Terms "sun" and "star" are used mostly interchangeably: suns is preferred because they are all very close to the planet (astronomically.)

You can manipulate what type(s) of light these suns emit : these suns can emit sub-infrared and super-gamma and anywhere in between.

A mysterious Source creates a mysteriously strong Field around the planet, which we'll call "Ex-vee" for short. XV is totally protected by this super-magnetic/magical Field, which, though small, deflects all that nasty gamma radiation and heat. A layer of reflective, metallic clouds further cool the planet down, and mountains colored dark black act as heat absorbents, capping off and sending the rippling warmth up into the higher atmosphere.

So the intensity of the light is certainly blinding, but not particularly hot. The planet is protected from the suns' radiation and heat. It has liquid water. (Though no breathable oxygen has been developed, that will come with photosynthesis, which is easy when you have the light of 27 suns on you nearly all the time.) So, all of this magnetic field/heat protection is currently being handwaved (may be covered in future questions).

Now, the size/type of the suns is up to you, but there must be at least one

1. blue giant

2. white dwarf

3. midrange star

Yay! So we have our stars. Toggle the types of light and we're halfway there.

Additionally:It's heliocentric. From what I understand, it would be best to have the largest blue star either at the center or in a binary orbit. Smaller stars orbit these stars (or are perhaps caught in between) and the even smaller stars orbit these pairs or single stars. Then finally come the planets, orbiting stars orbiting stars orbiting stars (or a single stationary star).

I figured out the distance from the inner edge of our real-world Kuiper Belt ($\approx 4$ lighthours.) Not that much. So I'm going to say, the suns must be within 1 light-day of each other and the entire group of stars must be within 1 light-month of each other. Ignore the effects of the compactness will have on the crushing gravity. The orbits must be long-term stable. I want all 27 suns to be visible from the planet (not necessarily at the same time, you manipulate as needed) and I want there to be a night (a point at which only 0-5 suns are visible, meaning 22-27 are not visible) and there should be such things as eclipses (a shadow falling on a sun, either from the planet/other planets/moons, if there are any other planets or if there are any moons.) You may insert a white hole of any mass at any point, but only one. It cannot replace one of the suns. There must be all 27 in addition to the white hole, if added.

As For How It Formed And How Long It Must Last:

This is kind of a tough one to explain. Suffice it to say (hopefully) that the suns are kept alive for up to 20 billion years, even the giant blue star. A highly technological society and the fact that this is a "light plane" fuel the stars with enough energy to keep them alive for a very, very long time. (Please suspend disbelief.)

They also (sorry for making you wince, astronomers out there) formed very very very unimaginably fast. Like, in a couple thousand years. Some all-powerful entity (read: the author) commanded it to happen. Now we have super-healthy, long-lasting stars that formed very quickly and settled into their ideal orbits. Rocks smash together, etc etc, and our dear XV forms and settles into an orbit, orbiting one (or two) stars, each of which are orbiting other larger stars etc.

NO black holes(NO exceptions). You MAY insert a white hole(s) as needed. NO instability. NO supernovae. NO collisions (well, apart from asteroids/comets/whatevers that would get vaporized by XV's Field or the sun system's heat). The suns must indeed be suns! No fakes. 27 suns (though you may add additional non-stellar objects to make it work, (planets/moons/asteroids, NOT BLACK HOLES or gravitational/stellar anomalies!))

Oops! I just used the last atom of unobtanium in this universe and my hand(wavium) just fell off from all the handwaving to manipulate light and star lifetimes, heat, etc. Now it's up to YOU to figure this out (without any "magic"):

How would this work?

You need to figure out:

What orbits the stars follow/how they orbit each other. How XV orbits the star(s). (Not tidally locked, please.) Does XV have any moon(s)? Are there other planets in this solar system? (these are for stability). Things like seasons, day lengths, eclipses, sunrises/set times etc. will be left for another post.

There must be a long-term stability. If it helps, you can manipulate gravity so that the stable orbit "freezes" for the long term. I also need to know if this system needs any other planets to work and if it can work with any other planets. Same with a moon or moons.

Finally:

To summarize the Ultimate Question

What would it look like? What stars would orbit rough stars? I don't need an informative diagram. Just draw/show me a rough outline: Star 1 (blue star) is here, Star 7 orbits Star 9 which orbits Star one, during their orbits Star 16 is at the position opposite of Star 24, XV orbits Star ___ which orbits ___ at __ position...

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Thank you to all in the Sandbox who helped me develop this question, especially @Renan and @Secespitus.

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In accordance with this meta post, please do not use magic as an answer (handwavium is already used enough that I want a fairly science-based answer to this, please.)

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