Although the planet Neptune was first sited in 1846 through a telescope, its existence was already known to mankind much before that thanks to mathematical calculations. Irregularities in the movement of Uranus pointed to gravitational pulls from an unknown planet. Calculations by French astronomer Alexis Bouvard and German scientist Johann Galle help spot Neptune via telescope. In fact, Italian astronomer Galileo had drawn sketches of the planet mistaking it to be a star because of its slow motion. Just like other planets of the solar system this one, too, was given a name derived from Greek and Roman mythology. Neptune is the Roman God of the sea. Since astronomers have mostly chosen to do ground-based studies about it, there has been just been one mission to the cool, blue planet, viz. the Voyager 2 in 1989. Although it’s faraway away from the sun and gets very little light from it, Neptune's winds can reach up to 1,500 mph (2,400 km/h), the fastest detected yet in the solar system. Which is surprising as it is sunlight that helps warm and drive a planet's atmosphere and the Blue planet gets very little of it. Neptune has 14 moons orbiting around it, all named after lesser sea gods and nymphs from Greek mythology, the largest being Triton which was discovered in 1846. The Tritonic is the only one that is spherically shaped while the other 13 moons are irregular in shape. The rings around Neptune that give the planet such a unique look are actually bright thick clumps of dust called arcs. The rings have uneven and short lives and are much more unstable than apparently thought, some of them even dwindling away rapidly. It was the Voyager 2 that discovered Neptune's rings and 6 of the planet's moons namely Despina, Galatea, Larissa, Naiad, Proteus and Thalassa.