If you are in the US, here's @nasa guide on watching #Eclipse2017 safely tomorrow… https://t.co/OWer182wMh
— ESA (@esa) August 20, 2017
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If you are in the US, here's @nasa guide on watching #Eclipse2017 safely tomorrow… https://t.co/OWer182wMh
— ESA (@esa) August 20, 2017