Uranus' Atmosphere. An infrared image of three layers of Uranus' atmosphere consisting of mostly hydrogen with traces of methane. Image processing has been used to brighten the rings around Uranus so astronomers can study their structure. In reality, the rings are as dark as black lava or charcoal. This false color picture was assembled from several different exposures. Credit: Erich Karkoschka (University of Arizona Lunar & Planetary Lab) and NASA.


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Sunrise. Photographed in the vicinity of Pecos, Texas from an altitude of about 155 nautical miles. From this view, much of the solar energy is scattered by the residue from the Philippine's Mt. Pinatubo volcanic eruption in June 1991. The dark band of aerosols extending across the image, through which the sun is visible, consist primarily of sulfuric acid crystals that scatter the incoming sunlight.