No, that's probably not that common. It could just be a translation thing- the language of the Astrals doesn't always reference well with human words. Or maybe when you're that big, stars and planets don't seem so different.

[Just guesses, admittedly. He's only ever exchanged actual conversation with one Astral, and they likely wouldn't have been interested in talking astronomy at the time. Even if he'd tried, the answer would likely be too taxing to understand anyway.

Anyway, that's mostly irrelevant right now.]

Might be neat to learn the constellations here. That way once the real sky comes back, we'd know what to look for.