Heliocentric

Here is a simple argument in support of my hypothesis:

It is entirely arguable that the cosmology depicted in the Voynich manuscript is heliocentric. There is no need to argue it here. It is one of the first things noted about the work. It certainly deviates from the standard Ptolemaic geocentric model. On the whole, it offers a unique cosmology that has defied ready identification. I think it is best described as early modern.

It was the heliocentricism, amongst other things, that led so many people to place the work in the 1500s, the golden era of Renaissance astronomy and scientific speculation, or later. All the pioneers of modern astronomy have been touted as possible authors.

But the carbon-dating of the codex places the work firmly in the 1400s, and earlier rather than later. This is an inescapable constraint on possible scenarios. Even though its cosmology seems advanced, the work cannot be a production of the 1500s or later.

Who is the great unsung champion of heliocentricism in the 1400s? Who anticipated Copernicus by a century? Nicholas of Cusa.