From about the time when we learn what ‘eyes’ and ‘the Sun’ are, our parents drill it into us that those things should never ever be mixed. The Sun might be 150 million km away, but that doesn’t mean our delicate corneas – the transparent outer layer of your eye – can withstand the incredibly damaging ultraviolet (UV) rays beaming down into them when we try to stare directly into the white-hot circle in the sky.
From our very good friends over at sciencealert.com
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