Facts about the planet Neptune
1. Neptune is the fourth largest planet in the Solar System.
2. Neptune is a gas planet, composed of hydrogen, helium, methane, with traces of ammonia and water.
3. The only spacecraft ever to visit Neptune was the Voyager 2 in 1989.
4. Neptune is the god of the sea in Roman Mythology.
5. Neptune has the stronger winds than any other planet in the Solar System. Blowing in a westerly direction, winds on Neptune get up to 2,000 km/hour (1,200 miles/hour). "The Scooter" is a cloud that moves around Neptune about every 16 hours.
6. The blue color of the planet is due to the absorption of red light by methane in the atmosphere.
7. The orbital speed of Neptune is 5.4 km/second.
8. The diameter of Neptune is 49,528 km
9. A Neptune day is equal to 0.75 Earth Days
10. A Neptune year is equal to 164.83 Earth Years