Neptun Essay Example | Topics and Well Written Essays - 1000 words

Neptun - Essay ExampleThis picture of Neptune was taken on August 20, 1989 by Voyager 2. In the center of the image, the gigantic Dark Spot can be seen. The latitude of the planet Neptune is 22 degrees south and circuits every 18.3 hours. The east and the south of the Great Dark Spot change their appearances constantly in four hours.The internal structure of Neptune can be inferred from the planets radius, period of rotation, mass, and shape of its gravitational field and the demeanour of hydrogen, helium, and water at high pressure. The picture shows a cut-away view of Neptune composed of an outer envelope of molecular hydrogen, helium and methane. Below this region Neptune is composed of a layer rich in water, methane, ammonia, and other elements with high temperatures and pressures. Ice and rock constitutes the core of Neptune.This picture gives a nearly true picture of Neptune taken by the Hubble Space Telescopes (HST) Wide Field Planetary Camera (WFPC), with a picture of Trito n taken with the HSTs Faint Object Camera. Even though, the image of Triton is wispy but it clearly shows a glistening equatorial region. In the lower left, the south pole is clearly visible. Near the bottom of the image a bright cloud feature can also be seen. It can be seen at 30S and 60S latitude. Another bright cloud can also be seen at 30N latitude in the northern hemisphere.The fighting(a) nature of Neptune is clearly visible from the fact that the second smaller ... In One feature that is conspicuous by its absence is the storm system known as the Great Dark Spot.HST Observes High Altitude Clouds These three pictures were taken on October 10, October 18 and November 2, 1994 when Neptune was only 4.5 cardinal kilometers from Earth. The pictures further proved the dynamic nature of the planet as the difference in the temperature between Neptunes Building on Voyagers initial discoveries, Hubble has revealed that Neptune has a remarkably dynamic atmosphere that changes over j ust a few days. Only in few days, the temperature difference between Neptunes strong internal heat source and its snappy cloud tops were-162 Celcius or -260 Fahrenheit which might be the causes that trigger instabilities in the atmosphere and result in large-scale weather changes. The high meridian methane ice-crystals can be seen in pink.New Dark Spot After the images in June 1994, which showed the disappearance of the Great Dark Spot, on November 2 a natural spot, appeared near the limb of the planet. The new spot has high altitude clouds along its edge, resultant of gasses that have been pushed to higher altitudes where they cool to form methane ice crystal clouds. The down in the mouth spot may be a zone of clear gas that is a porthole to a cloud deck lower in the atmosphere. Cirrus-like Clouds Bands of sunlit cirrus-like clouds can be seen in this image of Neptunes northern hemisphere. 35 miles mellow, shadows are cast on the blue cloud deck. The width of the white streaky clouds ranges from 48 to 160 kilometers (30 to 100 miles) and extend over thousands of miles. True-color Image The picture taken by Voyager 2 has been edited