Can you really go blind staring at an eclipse? Tips for safe viewing - CNN

CNN
Can you really go blind staring at an eclipse? Tips for safe viewing
CNN
(CNN) On August 21, the moon's shadow will block the sun from view in a total solar eclipse. The day the sun disappears is coming. Wherever you are in the United States, you're going to want to look up, and that's OK. Every astronomer in the country ...
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