The outer solar system: perspectives for exobiology.
D000641:Ammonia; D055580:Astronomical Phenomena; D001256:Astronomy; D001272:Atmosphere; D055598:Chemical Phenomena; D002621:Chemistry; D005118:Extraterrestrial Environment; D005740:Gases; D055593:Geological Phenomena; D005844:Geology; D006859:Hydrogen; D008697:Methane; D013055:Spectrophotometry, Infrared; D013057:Spectrum Analysis; D013696:Temperature
D005740:Gases; D000641:Ammonia; D006859:Hydrogen; D008697:Methane