Neptune is the 9th planet in our Solar System. It is also the windiest planet in our Solar System, as it can reach wind speeds of 2173 mph. Inside, on the core, Neptune can reach up to 7000 degrees (Celsius) but outside on the surface it can get to -219 degrees (Celsius).
When an Astronomer, Galeo, first discovered it in 1636 he thought it was a star, because of its slow orbit. In 1845 some other mathematical Astronomers discovered it and finally qualified it as a Planet.