COLOUR OF URANUS AND NEPTUNE

About:

• Neptune and Uranus have much in common — they have similar masses, sizes, and atmospheric compositions — yet their appearances are in different shades of blue.
• At visible wavelengths, Neptune is a rich, deep azure hue, while Uranus is a distinctly pale shade of cyan.
• The reason is that the haze around Uranus is thicker than that around Neptune.
• Uranus’s stagnant, sluggish atmosphere makes it appear a lighter tone than Neptune.
• If there was no haze in the atmospheres of Neptune and Uranus, both would appear almost equally blue as a result of blue light being scattered in their atmospheres.