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Why is the Sky Blue?
Some say it's due to the blue oceans.
Some think it's what's in the atmosphere(mostly nitrogen and oxygen).
Some believe it's because outer space is blue.
But truthfully, it has to do with the size of the particles in the Earth's atmosphere. They are considered "small" particles (much less than 1 nanometer across).
These small particles scatter sunlight as it passes through.
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When the sun is lower in the sky, sunlight travels a longer distance through the atmosphere to reach an observer.
This means it encounters more particles that scatter out most of the blue light, as well as some green and yellow light. This leaves mostly red light when the sunlight reaches t...
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Sunlight contains all visible colours of light and more.
In the 1870s, a man named Rayleigh found that each colour (or wavelength) of light is scattered to a different degree.
More blue light than other colours is scattered out of the sunlight travelling through the atmosphere.
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The red planet is actually many colors. At the surface, we see colors as brown, gold, and tan. The reason Mars looks reddish is due to oxidization—or rusting—of iron in the rocks, regolith (Martian “soil”), and dust of Mars. This dust gets kicked up into the atmosphere and from a distance makes t...
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