Can you really go blind from staring directly in the sun? and if so, where is the proof? and how do sunglasses protect your eyes from the sun?

Because the sun project a bright light and with the light it's heat Raise but if u put on glasses it protect your eyes from the brightness and the raise

Yes you can but it take a while to go compleatley blind
the proof is in the pudding and also the internet and in the eyes of blind ppl but the proof is in the UVA rays that the sun has and sun glasses only protect your eyes from the reflection of the sun not if you stare at it.

Keep your breathing calm and try to ignore it

Iwould put 'think' in the blank