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We all know that February 29th only exists every four years, but do you know what exactly a year is? Or how we came to that measurement? Minute Phsyics does, and they’re happy to enlighten you in their latest video . More » Broadcasting platform : YouTube Source : Gizmodo Discovery Date : 28/02/2012 14:02 Number of articles : 2
What Exactly Is a Year and How Is It Measured? [Video]
