#9/ Neptune takes nearly 165 Earth years to make one orbit of the Sun.

That’s equivalent to 60,190 Earth days to orbit the sun once! Neptune has a very slow orbital speed of 3.37 miles per second (5.43 km/s).

This means that since it was discovered in 1846, it has only completed just one orbit!

You may also like these interesting facts about Neptune that are outta this world!