Sunsets on other planets appear different because of the differences in the distance of the planet from the Sun, as well as different atmospheric compositions.
On Mars, the Sun appears only about two-thirds of the size that it appears in a sunset seen from the Earth,because Mars is further from the Sun than the Earth. Although Mars lacks oxygen and nitrogen gas in the atmosphere, it is covered in red dust frequently hoisted into the atmosphere by fast but thin winds.At least some Martian days are capped by a sunset significantly longer and redder than typical on Earth.One study reported that for up to two hours after twilight, sunlight continued to reflect off Martian dust high in the atmosphere, casting a diffuse glow.
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