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Fraser
2017-Mar-08, 02:10 PM
Due to its rapid orbital period and slow rotation, a day on Mercury lasts 176 days, which is twice as long as a year on that planet!
The post How Long is Day on Mercury? (http://www.universetoday.com/47834/length-of-day-on-mercury/) appeared first on Universe Today (http://www.universetoday.com).


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