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An astronomical unit is a unit of distance measurement equal to the average distance from the Earth to the Sun – about 149,505,000 kilometers. It is used to measure distances in the solar system.
An astronomical unit is a unit of distance measurement equal to the average distance from the Earth to the Sun – about 149,505,000 kilometers. It is used to measure distances in the solar system.
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.