- Pluto got its name thanks to an eleven-year-old girl
When in 1930 scientists discovered Pluto, they arranged a competition for the best name for a new planet. Offers came from all over the world.
- In 2006, Pluto was downgraded in status and officially became a dwarf planet No. 134340
Pluto and his companion Charon, pictures from the station "New horizons":
- Pluto has five satellites
The diameter of Charon, the largest of them, is about half the diameter of Pluto, so they are often viewed as a binary system, since the orbits interact.
- Pluto is the only known planet with an atmosphere of nitrogen, methane and carbon monoxide
It is toxic to humans and varies depending on how close Pluto is to the Sun.
- On Pluto there is an underground ocean with frozen water
Its depth is from 100 to 180 kilometers. This means that the water dwarf is three times more than on the Earth. The remaining 2/3 of the planet consist of hard rock and frozen nitrogen.
