Neptune is the eighth planet from the sun, and it's about 2.8 billion miles away from the sun. This distance is roughly 30 times further away from the sun than Earth is, making Neptune a cold and dark planet.
Because of its distance from the sun, Neptune is considered to be an ice giant, according to NASA. Its atmosphere is made mostly of water, ammonia and methane. A typical day on Neptune lasts about 16 hours because it rotates much faster than Earth, and it takes Neptune 165 years to make a complete orbit around the sun. Neptune has six rings, although these rings are not as prominent as the rings around Saturn.