Editing Celestial sphere (section)

==Star globe==
[[File:JostBurgi-MechanisedCelestialGlobe1594.jpg|thumb|upright=.8|Celestial globe by [[Jost Bürgi]] (1594)]]
{{main|Star chart|Armillary sphere|Celestial globe}}
A celestial sphere can also refer to a physical model of the celestial sphere or celestial globe.
Such globes map the constellations on the ''outside'' of a sphere, resulting in a mirror image of the constellations as seen from Earth. The oldest surviving example of such an artifact is the globe of the [[Farnese Atlas]] sculpture, a 2nd-century copy of an older ([[Hellenistic period]], ca. 120 BCE) work.