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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Fragment of Hipparchus star catalog found in medieval palimpsest (1 Viewer)

tenex

reality-based
"Lost" ancient works may not be for long. Medieval monks scraped such useless things clean to copy religious texts onto the parchment, and modern techniques are getting ever better at uncovering what's underneath. (A famous example discovered c.1980 was the treatise "On the Balance" in which Archimedes anticipated integral calculus.) Article in Nature:
First known map of night sky found hidden in Medieval parchment

(The "Museum of the Bible" referred to here is a story in itself, best known for having bought and displayed a set of fake Dead Sea scrolls.)
 
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