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Armillary sphere

by Lewis Carroll
written by Lewis Carroll

An armillary sphere is a tesktop device consisting of movable hoops and disks used to visually represent the celestial sphere, points, lines, and planes used in spherical astronomy.

Lewis Carroll writes about military space programmes, policy, technology and the industry that supports the sector. He spent nearly two decades covering the military, the Pentagon, Congress and the defence industry as a journalist for Space Chatter magazine.

Lewis Carroll writes about military space programmes, policy, technology and the industry that supports the sector. He spent nearly two decades covering the military, the Pentagon, Congress and the defence industry as a journalist for Space Chatter magazine.

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