“Bhikkhus, there are world interstices, vacant and abysmal regions of blinding darkness and gloom, where the light of the sun and moon, so powerful and mighty, does not reach.”
—SN 56.46: Darkness
IMO, passages like this demonstrate that if lokadhātavaḥ are an element of the dharma that can be said to exist, in the way that say, my chair “exists”, then they aren’t “stars”.
If one were to try to “see” another of these world-systems, I do not think it would be part of our observable universe. Eventually, the light would be so red-shifted, we would never be able to detect them.
Just IMO though.
This might be taking the “where the light of the sun and moon, so powerful and mighty, does not reach” part of the quote too literally. The light cannot reach ‘there’, which would mean no visible stars, a ‘blank’ night sky.