Galileo's handwritten notes found in ancient astronomy text

I have had the experience of serendipitous discovery when researching relatively recent history. To find Galileo’s handwriting 400 years later, effectively engaging in both agreement and debate with Ptolemy through the latter’s work… even though he specifically was looking for it, it still must have been surreal.

That's not "ancient". That word often means thousand(s) of years ago.

What a wild find. Good for the historian.