Why do Uranus and Neptune appear to be blue?

Answer 1

Methane gas in their atmosphere make them appear blue!

The answer to Neptune’s color comes from its cloud tops. The upper atmosphere of Neptune is made up of #80%# hydrogen, #19%# helium with a trace #1%# amount of methane and other ices, like ammonia and water.

Methane absorbs light at #600 nm#, which is the red end of the spectrum of visible light.

Just like Neptune-
Uranus' atmosphere is also made up of hydrogen, helium and methane. .
The Sun actually contains all the colors in the spectrum, from red and yellow to blue and green. Sunlight hits Uranus and is absorbed by its atmosphere. The methane in the clouds of Uranus is more likely to absorb colors at the red end of spectrum, and more likely to reflect back light at the blue-green end of the spectrum. And that’s why Uranus has its blue color.
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Answer 2

The main reason why Uranus and Neptune are blue is because methane, which absorbs red light and reflects blue light, is present in their atmospheres.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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