Cassini Terrestrial and Celestial Globes 1790 video

Giovanni Maria Cassini made a Terrestrial Globe in 1790 and a Celestial Globe in 1792.  This video shows both globes virtually recreated in Google Earth, with the Celestial Globe turned inside out and placed 64 million meters outside the Terrestrial Globe.  The same space can be viewed live in Google Earth  (requires download of app, turn off Atmosphere layer in Google Earth).