The sky is blue due to the interaction of 3 things: the sunlight, the atmosphere and our eyes. Here is the full explanation. ?? Activate for English subtitles.

We found a short history of Greek mythology, it tells that one day 4 gods and goddesses disguised themselves as mortals to visit the house of a young painter named Rose.

Hestia and Apollo asked Rose if she could paint a picture of the Olympian gods and goddesses. Dionisios asked if she could have it ready in 3 days and Hera said they would give something in return.

Rose, being very humble, said that it wasn’t necessary, that she would do it for free.

When the deities returned 3 days later they were impressed by the painting in which Rose had painted a blue sky. They took off their costumes and finally revealed themselves telling Rose that they would grant her whatever she desired for such work.

Rose said “can I ask for the sky to be blue like in the painting?” And then the sky turned blue.

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