how long does it take for light to travel across the diameter of earth's orbit around the sun?不是翻译

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how long does it take for light to travel across the diameter of earth's orbit around the sun?不是翻译
how long does it take for light to travel across the diameter of earth's orbit around the sun?
不是翻译

how long does it take for light to travel across the diameter of earth's orbit around the sun?不是翻译
大约1秒钟时间.地球公转轨道直径约为3.0*10^8km 真空光速约3.0*10^8km/h 所以光穿过轨道直径需要大约一秒钟时间