In most telescopes, Uranus and Neptune appear visually as tiny, featureless disks with a pale bluish green color (similar to the Voyager view in Figure 10.2a). But with the largest groundbased telescopes, such as Keck and Gemini, or the telescopes in space, optical and infrared imaging reveals a number of individual clouds and belts. Images show atmospheric bands and small clouds suggestive of those seen on Jupiter and Saturn, but more subdued (Figure 10.10). The atmospheres of Uranus and Neptune are rich in methane, and methane is a strong absorber of infrared light. Observations made in different spectral regions add information: in Figure 10.10, the atmospheres of Uranus and Neptune appear dark because of the strong absorption of reflected sunlight by methane, so the highest clouds and bands stand out in stark contrast.