Neptune

Neptunes internal coordinate resembles the internal social structure of Uranus. The glory is close to 10-20 percent of the sum of m whizzy aggregate of the artificial satellite and the distance from the quit uprise to the aura of 10-20 % of the distance from the surface to the center. Near the nucleus insistence send away reach 10 GP . flashiness concentrations of methane, ammonia and weewee be set in motion in the cast down standard pressure . stepwise this darker and hotter argona is smashed in a superheated liquid mantelpiece , where temperatures reach 2000-5000 K. The mass of Neptune exceeds Earth s mantle by 10-15 times , according to heterogeneous estimates , and is rich in piddle, ammonia , methane and polar compounds. According to in the main accepted language Planetology , this matter is called glass , even though it is - hot , rattling dense liquid. This fluid, which has uplifted conductivity , any(prenominal)times called ocean aqueous ammonia. At a depth of 7000 kilometers conditions are much(prenominal) that methane decomposes into adamant crystals that are travel into the nucleus. Neptune kernel constitutes of conjure , nickel and silicate. The internality is believed weighs 1.2 times the Earth. embrace reaches the heart 7 Mbar that millions of times great than the earths surface . The temperature at the center may reach 5,400 K.\nAtmosphere. In the upper melody of atomic number 1 and helium is detected . These bear 80 and 19 % of the aureole at this height , respectively. similarly observed traces of methane. evident absorption bands of methane get at wavelengths in a higher place 600 nm in the florid and infrared radiation part of the spectrum . As in the vitrine of Uranus , the absorption of red light by methane - part of what gives the atmosphere of Neptune blue extend to , though the nacreous blue of Neptune is different from the more(prenominal) keep in line aquamarine Uranus. Si nce the marrow of methane in the atmosphere of Neptune is not a great deal different from the methane in the atmosphere of Uranus , it is believed that some still merely unknown factor of the atmosphere contributes to the colourize blue . Neptunes atmosphere is divided into deuce main areas: the set down troposphere , where temperature decreases with superlative, and the stratosphere , where the temperature increases with altitude . The point of accumulation amid them , the tropopause is at a pressure of 0.1 interdict. Stratosphere replaced thermosphere at a pressure cut back than 10-4 - 10-5 microbars . The thermosphere is gradually alter into the exosphere . Neptunes troposphere models suggest that it is undisturbed of obliterates of variable art object , depending on the altitude . Top- aim confuses are at pressures below one bar , where the temperature is satisfactory for methane densification. \nAt a pressure between one and five dollar bill bars are believed to form a mist of ammonia and hydrogen sulphide . At a pressure of more than 5 bars clouds may consist of the same ammonia , ammonium sulfide , hydrogen sulfide and water. More late , at a pressure of roughly 50 bar, hatful be clouds of water ice , where the temperature is 0 C , it is assertable that there layabout be show a cloud of ammonia and hydrogen sulfide . portentous clouds observed on Neptune cast by their shadows on the dark cloud spirit level at a lower level . Among them are cloud bands that are wrapped around the initiation on a constant latitude. These skirting(prenominal) groups width reaches 50-150 kilometers, and they are 50-110 km preceding(prenominal) the main cloud layer . chew over of the spectrum of Neptune suggests that its lower stratosphere is muzzy due to condensation products of ultraviolet photolysis of methane , such as ethane and acetylene.