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	How many human years are there in a light year? Susie in Lincolnshire
	A light year is a measure of distance. It's the distance light travels in a year, so it's not a measure of time. Calling them light years s rather confusing I must admit! So it's not the same as converting human years to dog years. They are two different measurements completely.
	November 2005

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Listen to this as part of the show: 27th Nov 2005 - Stars, Cosmology and the Beginning of the Universe
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