Neptune Point New Zealand Sauvignon Blanc White Wine - 6x75cl

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One might be tempted to say "except 'Earth'", which in the English language is the name of a Germanic deity, Erda. The IAU policy is that one may call the Earth and the Moon by any name commonly used in the language being used. Contrary to common use by science fiction writers, 'Terra' and 'Luna' are not the official names of planet Earth and its moon. See the wikipedia article Earth for references. Main articles: Formation and evolution of the Solar System and Nice model A simulation showing the outer planets and Kuiper belt: a) before Jupiter and Saturn reached a 2:1 resonance; b) after inward scattering of Kuiper belt objects following the orbital shift of Neptune; c) after ejection of scattered Kuiper belt bodies by Jupiter Evidence that the rings might have gaps first arose during a stellar occultation in 1984 when the rings obscured a star on immersion but not on emersion. [154] Images from Voyager 2 in 1989 settled the issue by showing several faint rings.

The formation of the ice giants, Neptune and Uranus, has proven difficult to model precisely. Current models suggest that the matter density in the outer regions of the Solar System was too low to account for the formation of such large bodies from the traditionally accepted method of core accretion, and various hypotheses have been advanced to explain their formation. One is that the ice giants were not formed by core accretion but from instabilities within the original protoplanetary disc and later had their atmospheres blasted away by radiation from a nearby massive OB star. [70]Models suggest that Neptune's troposphere is banded by clouds of varying compositions depending on altitude. [84] The upper-level clouds lie at pressures below one bar, where the temperature is suitable for methane to condense. For pressures between one and five bars (100 and 500 kPa), clouds of ammonia and hydrogen sulfide are thought to form. Above a pressure of five bars, the clouds may consist of ammonia, ammonium sulfide, hydrogen sulfide and water. Deeper clouds of water ice should be found at pressures of about 50 bars (5.0MPa), where the temperature reaches 273K (0°C). Underneath, clouds of ammonia and hydrogen sulfide may be found. [85] Neptune is the eighth and most distant planet from the Sun. That means Uranus is Neptune’s only neighboring planet.

In 1989, the Great Dark Spot, an anticyclonic storm system spanning 13,000km ×6,600km (8,100mi ×4,100mi) [101] was discovered by NASA's Voyager 2 spacecraft. The storm resembled the Great Red Spot of Jupiter. Some five years later, on 2 November 1994, the Hubble Space Telescope did not see the Great Dark Spot on the planet. Instead, a new storm similar to the Great Dark Spot was found in Neptune's northern hemisphere. [105]

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Neptune's 164-year orbital period means that the planet takes an average of 13 years to move through each constellation of the zodiac. In 2011, it completed its first full orbit of the Sun since being discovered and returned to where it was first spotted northeast of Iota Aquarii. [41] The dipole component of the magnetic field at the magnetic equator of Neptune is about 14 microteslas (0.14 G). [93] The dipole magnetic moment of Neptune is about 2.2×10 17T·m 3 (14μT· R N 3, where R N is the radius of Neptune). Neptune's magnetic field has a complex geometry that includes relatively large contributions from non-dipolar components, including a strong quadrupole moment that may exceed the dipole moment in strength. By contrast, Earth, Jupiter and Saturn have only relatively small quadrupole moments, and their fields are less tilted from the polar axis. The large quadrupole moment of Neptune may be the result of an offset from the planet's centre and geometrical constraints of the field's dynamo generator. [94] [95] Neptune brightened about 10% between 1980 and 2000 mostly due to the changing of the seasons. [159] Neptune may continue to brighten as it approaches perihelion in 2042. The apparent magnitude currently ranges from 7.67 to 7.89 with a mean of 7.78 and a standard deviation of 0.06. [15] Prior to 1980, the planet was as faint as magnitude 8.0. [15] Neptune is too faint to be visible to the naked eye. It can be outshone by Jupiter's Galilean moons, the dwarf planet Ceres and the asteroids 4 Vesta, 2 Pallas, 7 Iris, 3 Juno, and 6 Hebe. [160] A telescope or strong binoculars will resolve Neptune as a small blue disk, similar in appearance to Uranus. [161]