![]() It has at least eight moons and a distinctive system of rings.Ģ. Neptune is a large gas- and ice-rich planet of the outer solar system. In fact, at least one form of volcanic eruption is active. The surface of this icy moon is much younger than might beĮxpected for such a small body large regions have been shaped by volcanicĪnd tectonic processes that must have been active over much of the history Its surface that nitrogen, a gas even on Titan, is frozen solid to form a Triton is so far from the Sun and temperatures (37 K) are so low on Moreover, Triton joins TitanĪs one of the few moons in the solar system to have an atmosphere, albeit Moves in a highly anomalous, retrograde orbit. Neptune has at leastįourteen moons (2018), six of which were discovered by Voyager 2. Rings of Neptune, surmised from Earth, were confirmed. Neptune is a giant planet with a banded, blue atmosphere, decorated withīrilliant white clouds of methane ice, unlike Uranus, its neighbor. This frigid part of the outer solar system. Information about Neptune that refined our views of planetary evolution in To its history, the Voyager spacecraft returned remarkable images and Neptune than any other planet on its 12 year long tour of the planets. Past Neptune on its way out of the solar system. All of this changed when Voyager 2 hurtled UntilĪugust of 1989 little was known about Neptune or its satellites, as no Planet, orbits the Sun in the outer solar system far beyond Uranus. Neptune, a planet that rivals Earth for the designation as the blue ![]() Chapter 12: The Neptune System 12.0 Introduction
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