アメリカ自然史博物館のインスタグラム(amnh) - 7月30日 04時56分

The design of this armillary sphere was inspired by those of antiquity, but its content captures our modern understanding of the universe. Early armillaries, dating back to the second century AD, were used as tools to derive the coordinates of a star or planet on the sky. This sculpture, which places the Milky Way galaxy at the center, is positioned to demonstrate New York City's galactic address-it's precise location-at the moment the Hayden Planetarium opened.

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