Neptune

Dark, cold and whipped by supersonic winds, Neptune is the last of the hydrogen and helium gas giants in our solar system. More than 30 times as far from the sun as Earth, the planet takes almost 165 Earth years to orbit our sun. In 2011 Neptune completed its first orbit since its discovery in 1846.

The ice giant Neptune was the first planet located through mathematical predictions rather than through regular observations of the sky. (Galileo had recorded it as a fixed star during observations with his small telescope in 1612 and 1613.) When Uranus didn't travel exactly as astronomers expected it to, a French mathematician, Urbain Joseph Le Verrier, proposed the position and mass of another as yet unknown planet that could cause the observed changes to Uranus' orbit. After being ignored by French astronomers, Le Verrier sent his predictions to Johann Gottfried Galle at the Berlin Observatory, who found Neptune on his first night of searching in 1846. Seventeen days later, its largest moon, Triton, was also discovered.

In Roman mythology Neptune (Greek: Poseidon) was the god of the Sea. After the discovery of Uranus, it was noticed that its orbit was not as it should be in accordance with Newton's laws.

Learn more about the eighth planet in our solar system.

Neptune is the eighth planet from the Sun making it the most distant in the solar system. This gas giant planet may have formed much closer to the Sun in early solar system history before migrating to its present position. Neptune Planet Profile Neptune Diagrams Facts about Neptune Neptune was not known to the ancients. …

Neptune is the farthest planet from the sun and was the first to be predicted before it was discovered.

Neptune is the outermost planet of the gas giants. It has an equatorial diameter of 49500 km. If Neptune were hollow, it could contain nearly 60 Earths. Neptune orbits the Sun every 165 years.

Welcome to Top10Archive! From its 14 moons, to the history of naming this blue gas giant, in this installment, we're going visit the plant of Neptune...

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