Eight planets and nine planets

Nine planets in the solar system (eight planets)

In the solar system? There used to be nine planets. In addition to these larger planets, there are many smaller planets in the solar system, which are distributed in the asteroid belt between Mars and Jupiter. According to the distance from the sun, the nine planets of the solar system appear one by one below.

In 2006, the 26th International Astronomical Union held in Prague, Czech Republic passed a resolution to downgrade Pluto to a dwarf planet, so the solar system has now become eight planets. Therefore, the nine planets officially entered history and became eight planets.

Eight planets:

The eight planets in the solar system are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

What are the relative sizes of the eight planets? Photos of the eight planets

Please click on the pictures of the planets below to see the related introduction of each planet:

Mercury, Venus, Earth, Mars and Jupiter.

Saturn, Uranus, Neptune and Pluto.

It became a dwarf planet in 2006.

Three dwarf planets:

Dwarf planet is a new term of IAU in 2006, which generally refers to the sun star between asteroids and planets.

Please click on the dwarf planet picture below to see the related introduction of each dwarf planet:

Pluto, Eris and Ceres.

Other candidate dwarf planets:

At present, many celestial bodies (including Sedna, Karen and 12 or above) may become dwarf planets, but they have not been identified yet.