I still have found nothing on Enoch's observation that stars rise and die by becoming lightening (supernova) - or that there is a prison house for the heavens without measure or content (singularity?)
I scanned that one, and although there is apparently some good info there, it's very confusing about the dates involved for the various methods being discussed. The author discusses "Babylonian" astronomy during the "Seleucid Era." It's very misleading terminology. If the Seleucid Era is what the article is talking about, as seems to be the case, then this isn't very useful. Because it isn't really Babylonian.
Seleucis (for whom the era is named) was one of Alexander's generals who carved up the world upon the death of Alexander. The Selucids ruled the old Persian empire pretty much until the Romans took it over. Same story for Ptolemy, another of Alexander's generals, whose descendants ruled Egypt until Cleopatra, when the Romans took over.
Anyway, by the time of Alexander (and Seleucis), what we call Babylonia was probably as distant a memory as the time of Charlemagne is for us. And before Babylon there was the very ancient Sumerian empire (Abraham's origin). When Sumer fell, there was a mini dark age of a few centuries, and then Babylon rose (the political entitity mentioned in the Bible). When Babylon fell, another dark age followed, and then the Persian empire rose, and it was this which Alexander conquered. I believe that each new appearance of civilization in the region was largely ignorant of what went before, so there was virtually no intellectual continuity between, say, old Babylon and the later Persian empire (except collaterally, via the Hebrew scriptures).
So, it's misleading -- at least to me -- to speak of "Babylonian" astronomy during the Seleucic era. The Seleucids were Hellenic, so this whole website is consistent with the Enoch text's being of "classical" Greek origin, and this no historical anomolies are presented. (If I've read it correctly.)