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Photo: No known restrictions on publication.1778. Allegorie van de astronomie. Twee putti met telescopen en een globe. Uitgeversnummer 190. http://JohnBatchelorShow.com/contact http://JohnBatchelorShow.com/schedules Parler & Twitter: @BatchelorShow 2/2: #ClassicAstronomy: Still Searching for Planet 9. Konstantin Batygin @caltech @Kbatygin http://www.nature.com/news/evidence-grows-for-giant-planet-on-fringes-of-solar-system-1.19182 https://yaledailynews.com/blog/2020/11/16/yale-astronomers-venture-on-quest-for-planet-nine/