An entire planet seems to be "astronomical at best." -- Anon Guest
Aargus 6F is one of the weirder planets to evolve cogniscent life. Their parental gas giant, Aargus 6, is far out of the 'Goldilocks Zone', yet tidal forces caused by the orbit in combination with a rotating iron core have caused the planet to be warm enough to host life.
The skies are almost always dark on Aargus 5F, when they are not dominated by their parental gas giant, which takes up a good quarter of the visible sky in the correct conditions. The distant sun is not important in their general cosmology, since to them, it is no more than a very bright star. Indeed, the hypothesis that it was the source of illumination for Aargus 6 was hotly debated for eons amongst the populace.
There is, however, something to be said for the ability to look up at any time and see the workings of the cosmos. Generations made myths to explain the bodies in the sky, why neighbouring moons of Aargus 6 only appeared at certain intervals. Why the obscuring mass of Aargus 6 showed itself in different aspects, and so on. The Aargosians developed the magnifying lens and used it to notice things. Things beneath them as well as above.