Tell me about Neptune.?

Question

I've heard that Neptune is completely Gas, then other places I read it's an Ocean with heavy clouds & wind.

Which is true?

It's my favorite Place.

Answer 1

Neptune is one of the "Gas Giants," which are the four outer planets in our system. Whether it has a core buried deep inside its center is not fully known. Saturn for instance is thought to be completely gaseous, since its density by determination of its size divided by its weight determined by its gravitational behaviour is considered to be 0.75 with the density of water as 1.0. This means that if you had a bathtub big enough you could float Saturn in it. Never seen any density estimates of Neptune though. I have read in some popular science articles that some of the "Gas Giants" could have cores of carbon at their centers which would have been compressed by the enormous pressures in its core creating some of the largest diamonds ever thought of. This is simple speculation however. Nepture does have clouds that race around the planet a speeds exceeding the speed of sound. It surface has changed from one probes pictures on approach and retiring from the planet.which leaves some speculation there there is no real surface on this planet. Oceans are also speculation however, and they would be oceans of liquid gas, and not of water, similar to the liquid methane found on Titan by the Huygens probe. There are some astounding things on Neptune though even the possiblity of liquid water oceans "Neptune has rapidly swirling winds, but it is thought to contain a deep ocean of water. Its quick rotation fuels fierce winds and myriad storm systems." This was taken from space.com website on Neptune. (see below)

Answer 2

Neptune is the eighth and farthest planet from the Sun in our solar system. It is the fourth largest planet by diameter and the third largest by mass; Neptune is 17 times the mass of Earth and is slightly more massive than its near twin Uranus, which is 14 Earth masses, but slightly smaller due to its higher density. The planet is named after the Roman god of the sea. Its astronomical symbol (♆, Unicode U+2646) is a stylized version of Poseidon's Trident.

Neptune's atmosphere is primarily composed of hydrogen and helium, with traces of methane that account for the planet's blue appearance. Neptune's blue color is much more vivid than that of Uranus, which has a similar amount of methane, so an unknown component is presumed to cause Neptune's intense color. [1] Neptune also has the strongest winds of any planet in the solar system, measured as high as 2,100 km/h or 1,300 mph.[2] At the time of the 1989 Voyager 2 flyby, it had in its southern hemisphere a Great Dark Spot comparable to the Great Red Spot on Jupiter. Neptune's temperature at its cloud tops is usually close to −210 °C (−346 °F), one of the coldest in the solar system, due to its long distance from the sun. However, Neptune's center is about 7,000 °C (13,000 °F), hotter than the sun's surface. This is due to extremely hot gases and rock in the center.

Faint azure colored rings have been detected around the blue planet, but are much less substantial than those of Saturn. When these rings were discovered by a team led by Edward Guinan, it was thought that they might not be complete. However, this was disproved by Voyager 2. Neptune possesses thirteen confirmed moons. Neptune's largest moon, Triton, is notable for its retrograde orbit, extreme cold (38 K), and extremely tenuous (1.4 Pa) nitrogen/methane atmosphere.

Discovered on September 23, 1846, Neptune is notable for being the first planet discovered based on mathematical prediction rather than regular observations. Perturbations in the orbit of Uranus led astronomers to deduce Neptune's existence. It has been visited by only one spacecraft, Voyager 2, which flew by the planet on August 25, 1989. In 2003, there was a proposal to NASA's "Vision Missions Studies" to implement a "Neptune Orbiter with Probes" mission that does Cassini-level science without fission-based electric power or propulsion. The work is being done in conjunction with JPL and the California Institute of Technology.[3]

A portion of the dwarf planet Pluto's highly eccentric orbit brings it nearer to the Sun than Neptune, whose orbit is nearly circular. As a result, for approximately 13 to 20 years out of the every 248 (Pluto's orbital period), Neptune lies farther from the Sun than Pluto. The most recent occurrence of this phenomenon began 7 February 1979 and ended 11 February 1999. The next occurrence will happen in the 23rd century.

Answer 3

Neptune is the eighth planet from the Sun and the fourth largest (by diameter). Neptune is smaller in diameter but larger in mass than Uranus.

orbit: 4,504,000,000 km (30.06 AU) from Sun
diameter: 49,532 km (equatorial)
mass: 1.0247e26 kg
In Roman mythology Neptune (Greek: Poseidon) was the god of the Sea.
More than two centuries earlier, in 1613, Galileo observed Neptune when it happened to be very near Jupiter, but he thought it was just a star. On two successive nights he actually noticed that it moved slightly with respect to another nearby star. But on the subsequent nights it was out of his field of view. Had he seen it on the previous few nights Neptune's motion would have been obvious to him. But, alas, cloudy skies prevented obsevations on those few critical days. Hope This Helps

Answer 4

Scientists only know that the atmosphere is made up of hydrogen, helium and methane. Beyond that everything is speculation. Few probes have reached the planet, and due to its thick, tumultuous atmosphere we really don't have much of a clue whats down there.

It is theorized that it has a small core but other than that is mostly composed of gas.

Answer 5

Neptune is mostly gas--it can have heavy clouds and wind, even creating storms.

Answer 6

The gas changes to liquid a few thousand miles down and it has a small solid core.