The average temperature on Neptune

The average temperature on Neptune is around -392 degrees, which makes the planet the coldest planet in the solar system. Neptune was discovered in 1846, and can only be seen through a telescope. Neptune’s upper atmosphere is made of the gas methane which gives the planet a bright blue color. It takes Neptune 165 Earth years to orbit the sun. 1 day on Neptune lasts for about 16 hours, compared to Earths 24 hours. Read more here in details

Neptune