The very word “planet” comes from Greek, and it means “Wanderer”. So for the Hebrew to call their planets “walking stars” is not really a breakthrough. Whatever the Hebrew thought a “star” was, a planet is a wandering version of it.
The point, naturally, is that the Hebrew thought that stars and walking stars couldn’t be that huge, since they were relatively close. And so when they fell to Earth, it would be dramatic, but not Earth-Ending!
The Dead Sea literature implies that righteous men take their place in the heavens as another star of Yahweh. So if a “falling star” (aka meteorite) was seen to hit somewhere nearby, they must have been a little unsettled to see a fuming piece of stone or metal in a crater … instead of “good ol’ Moshe” who died during the last Passover!
So, you can either accept that the Hebrew didn’t know that stars were bigger than the Earth, or they didn’t know that meterorites were, in fact, not stars.
You can’t combine the two observations and then reassure everyone that the Hebrew scribes had things “just about right”.