FIND IT TONIGHT · BANGKOK
Uranus in numbers
- 4.0 × Earth
- Width
- 17 h 14 min, backwards
- One day
- 98°
- Axis tilt. Each pole gets 42 years of sunlight, then 42 years of dark.
- 84 years
- One trip around the Sun.
- 29
- Known moons, the newest found by the James Webb telescope in 2025.
WORTH KNOWING
The first planet found with a telescope.
William Herschel spotted Uranus in 1781. On a dark night with good eyes it is just visible without help, but binoculars make it easy.
Its blue-green colour comes from methane in the air, which absorbs red light.
Who has been there
- 1986Voyager 2The only spacecraft to visit, so far.