Labels:daily | reckoner OCR: Light-year LIGHT -YEAR iS the distance traveled by light in one year IT IS A MEASUREMENT that astronomers use to work out the vast distances 111 space Light travels at 186 000 miles (300 ,000 km) per second. One light-year (the distance traveled by light in one year), therefore, equals 5,875 billion mile (9,455 billion km). bilior
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