சனி கோள் இந்த கோளுக்கு முன்னாடி ஒன்னுமே இல்ல | Amazing planets in the universe Tamil |

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Light travels at a constant speed of 1,079,252,848.8 (1.07 billion) km per hour. That works out to 299,792,458 m/s, or about 670,616,629 mph (miles per hour).