Labels:brass | monitor | sky OCR: ATMOSPHERE Composition Like the other giant planets, Neptune has qaseous hydrogen and helium upper layer over liquid interior. Its blue appearance is due to the presence of methane, which absorbs light in the red and near -infrared wave lengths. Neptune' atmosphere also appears to contain haze of aerosol particles or ice crystals the exact com- position 01 which is unknown. The highest wind speeds of any planet 400 km 500 miles) per hour occur on Neptune. The mean temperature at the cloud tops -364 F. -220 c 53 K The atmosphere on Neptune contains feature known the Great Dark Spot, circular storm the size of Earth that resembles Jup- iter Great Red Spot. The spot spins counter clock- wise and moves west almost .200 km 745 miles per hour gaseous appear ance infr rared nowr oane hout
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