Engraving depicting an astronomer and his assistant observing Mercury, Venus and Jupiter from a roof top observatory in Paris. Dated 20th Century

---

Size: 3756px × 5584px
Location:
Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 20th, archival, archive, assistant, astronomer, astronomy, century, engraved, engraving, france, french, historical, history, illustrated, illustration, jupiter, mercury, observation, observatory, paris, refracting, refractor, space, telescope, telescopic, venus