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Astronauts on the Moon, with no atmosphere above them, looked up and saw a white sun — the yellow colour we see from Earth is not the sun's real colour but an artefact our own atmosphere paints onto i

The yellow Sun of ordinary Earth life is partly an atmospheric effect: Rayleigh scattering sends blue light into the sky and leaves the direct solar beam warmer. The Sun looks so naturally yellow from Earth that the colour feels like a fact rather than a local effect. Children draw it that way. Weather icons make it that way. Even many adults carry a mental picture of a golden disc, as if yellow were the Sun’... [6506 chars]

Astronauts on the Moon, with no atmosphere above them, looked up and saw a white sun — the yellow colour we see from Earth is not the sun's real colour but an artefact our own atmosphere paints onto i

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