Neptune
The farthest planet — too faint for the eye, a blue dot in a telescope.
Neptune needs binoculars or a small telescope. It was found in 1846 by predicting where an unseen planet must be pulling on Uranus.
Sunlight takes about four hours to reach it.
Facts
- Year
- 165 Earth years
- Winds
- the fastest in the Solar System, over 2,000 km/h