High-level haze on Uranus
This computer-enhanced photo taken by Voyager 2 shows the high levels of haze in Uranus' upper atmosphere. While the planet closely resembles Neptune in composition, Uranus emits less colorful wavelengths, making it a somewhat bland planet in comparison. NASA believes this is because the planet's internal heat is lower than the other gas giants. Because Neptune is at such an extreme axial tilt, the planet experiences different and sometimes violent seasons.