unbelievable-facts: High quality lenses made of rock-crystal were found among Viking artifacts. They are so well-made that they could be used in a telescope. They were crafted 1000 years ago—hundreds of years before Galileo.

sara luvv | sarah gifs | TributeMe

unbelievable-facts: High quality lenses made of rock-crystal were found among Viking artifacts. They are so well-made that they could be used in a telescope. They were crafted 1000 years ago—hundreds of years before Galileo.

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