A non-technological, repeating, phenomenon in the sky, holding its position in the sky for hours
Is this physically possible?
A non-technological phenomenon visible in the same position of the sky, for 18 hours of a day using the other 6 to do whatever, rise and set, just be impossible to see, it doesn't matter.
What matters is the 18 hours of constant position in the sky, on a repeating cycle.
For an observer that is assumed to be watching from the same place, each cycle.
The viewer's planet is not Earth, just has enough similarities for humans to live on it.
If it is possible, how complex a system would I need to make such a thing happen, and how stable would that system be?
The cause can be in the atmosphere, as long as it cycles, and has the same visibility.
I'd like planets, but if that's not possible, then use whatever is possible.
This post was sourced from https://worldbuilding.stackexchange.com/q/145912. It is licensed under CC BY-SA 4.0.
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