Mystery #4Tier 2space / safety
Why must you never look straight at the Sun?
We're told again and again: never stare at the Sun, especially during an eclipse. But the Sun lights up the whole sky and we see it every day. Why is looking right at it so dangerous?

Your guess
What's your hunch about why staring straight at the Sun is so harmful to your eyes?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
Make a guess to unlock the hints and the answer.