ANSWERS: 8
  • ALL THE ANSWERS to your questions are answered here: http://www.answerbag.com/q_view/177274/582161
  • Neptune, like the other gas giant planets, is made of very cold gases of hydrogen, helium, and methane. It has wispy white clouds, which we think are made of methane crystals. ( On Earth, the wispy white cirrus clouds are made of ice crystals.) It is almost as cold as Pluto: –330° Fahrenheit. Source= Scholastic
  • Scientists believe that Neptune is made up chiefly of hydrogen, helium, water, and silicates. Silicates are the minerals that make up most of Earth's rocky crust, though Neptune does not have a solid surface like Earth. Thick clouds cover Neptune's surface. Its interior begins with a region of heavily compressed gases. Deep in the interior, these gases blend into a liquid layer that surrounds the planet's central core of rock and ice. http://www.nasa.gov/worldbook/neptune_worldbook.html
  • Gas. It's simply made from a collect of gas.
  • Neptune's composition is probably similar to Uranus': various "ices" and rock with about 15% hydrogen and a little helium. Like Uranus, but unlike Jupiter and Saturn, it may not have a distinct internal layering but rather to be more or less uniform in composition. But there is most likely a small core (about the mass of the Earth) of rocky material. Its atmosphere is mostly hydrogen and helium with a small amount of methane. Or did you mean Neptune? Here, see for yourself: http://images.google.com/images?q=Neptune,+the+god&hl=en&suggon=0&um=1&ie=UTF-8&sa=X&oi=images&ct=title
  • neptunish material originating from there.
  • Neptune's atmosphere mainly consists of molecular hydrogen (H2) 80%, helium (He) 19% and methane (CH4) 1.5%. It also contains small amounts of hydrogen deuteride (HD) and ethane (C2H6). The average temperature of Neptune at cloud top is -220oC. It has an extremely hot core at about 5150oC, hotter than the surface of the sun. It is most likely that Neptune has a small solid core of a rocky material about the mass of the Earth surrounded by a layer of liquid which is probably Water with molecules of methane and ammonia. The temperature of this water is many times the 100oC that water boils at on Earth, but the extremely high pressure or the Neptunian atmosphere keeps the particles from escaping the water. When Voyager visited Neptune it measured wind speeds of up to 2400 km/h, the highest recorded on any planet due to its heat producing core causing rising heat. Also because of this core Neptune Radiates more than twice as much energy as it receives from the sun. Although Neptune is considered one of the great jovian planets (or gas giants), it is not really a true jovian as unlike Jupiter (the planet which gives its name to Jovian) Neptune is mostly Rock and water rather than gas. Astronomers think that Neptune formed from frozen water and rock supplied by commet-like material from the outer regions of the solar system. http://neptune114.tripod.com/comp.htm Neptune's composition is probably similar to Uranus': various "ices" and rock with about 15% hydrogen and a little helium. Like Uranus, but unlike Jupiter and Saturn, it may not have a distinct internal layering but rather to be more or less uniform in composition. But there is most likely a small core (about the mass of the Earth) of rocky material. Its atmosphere is mostly hydrogen and helium with a small amount of methane. http://www.nineplanets.org/neptune.html Neptune, like Jupiter, Saturn, and Uranus, is a so-called "gas giant" planet. They are made of mostly hydrogen, methane, ammonia, and some helium... http://www.newton.dep.anl.gov/newton/askasci/1995/astron/AST129.HTM Neptune contains mostly rock and water, with hydrogen and helium (and trace amounts of methane) in its dense atmosphere. Astronomers believe that Neptune formed from frozen water and rock supplied by icy comet-like material found in the outer regions of the solar system. As the planet grew in size, pressures and temperatures in the planet’s interior increased, heating the planet’s frozen water into a hot, dense liquid sometimes described as slushy “ice.” Although Neptune is one of the giant planets, it is smaller and has a different chemical composition than those of Saturn and Jupiter. While Saturn and Jupiter are made of mostly hydrogen and helium, Neptune captured a much smaller amount of these elements as the solar system formed. Instead, Neptune captured mostly water. Because water is more dense than hydrogen or helium, Neptune is more compact than either Jupiter or Saturn. Jupiter, for example, has a radius of 71,355 km (44,338 mi), while Neptune has a radius of about 24,760 km (about 15,383 mi). Neptune is also more massive and compact than Uranus, which has a radius of 25,560 km (15,882 mi). Neptune likely has a solid core no larger than Earth (Earth’s diameter is 12,756 km/7,926 mi); this core could be composed primarily of iron and magnesium silicates. Neptune’s core may be small because most of the rock composing the planet remains mixed with the vast ocean that extends upward from the core to the atmosphere. Neptune’s vast body of liquid accounts for most of its volume. Scientists think this pressurized ocean or mantle of slushy ice is composed mostly of water as well as molecules of methane and ammonia. Neptune’s ocean is extremely hot (about 4700°C/about 8500°F). The ocean remains liquid at this temperature instead of evaporating because the pressure deep in Neptune is several million times higher than the atmospheric pressure on Earth. Higher pressure holds molecules in liquid closer together and prevents them from spreading apart to form vapor. ‹ http://encarta.msn.com/encyclopedia_761577112/neptune.html Neptune's composition is probably similar to Uranus': various ices and rocks with about 15% hydrogen and a little bit of helium. http://www.projectshum.org/Planets/neptune.html
  • 2-16-2017 Neptunium, I guess.

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