…“Light years” are just a measurement of distance, nothing more. Saying they are unproven is like saying “kilometers/miles are unproven”. Dumbass.
Also, Dinosaurs are from earth. I fail to see how they have anything to do with astronomy…
And while I can’t speak for Dark Matter, Black Holes have been observed by actual people. Or at least, their effects on the nearby space has been observed. Likewise, pretty sure that, through intense study of the microcosmos, parallel universes are very likely real as well. Which is more than what we can say about Nephilim, Hell, Eden, Cain, Angels, the Firmament, and of course YHWH.
But hey, what do I know about these things? It’s not like I actually bothered to learn beyond a collection of age-old books written by dumb, inbred goat herders. Oh wait.