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The light cone – The presence of points in space and time into which the light emitted in a given event (the top of the light cone) can enter, or from which it can reach this vertex.
The light cone – The presence of points in space and time into which the light emitted in a given event (the top of the light cone) can enter, or from which it can reach this vertex.
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.