There are eight major planets.
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There are only 8 major planets in the solar system, since Pluto (the old ninth planet) was re classified as a dwarf planet. If we did count the 5 additional dwarf planets, then Pluto would be the tenth one out, since there is a dwarf planet called Ceres between Mars and Jupiter.
No, astronomers have not found all the moons of the outer planets. New moons are still being discovered, especially with the help of advanced telescopes and spacecraft missions. The outer planets like Jupiter, Saturn, Uranus, and Neptune have large numbers of moons orbiting them, many of which are small and difficult to detect.
There are eight recognised major planets which orbit The Sun. Starting nearest to the Sun and travelling outwards the planets are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
There are four rocky planets in our solar system: Mercury, Venus, Earth, and Mars. These planets are characterized by solid surfaces and are primarily composed of rock and metal.
There are 8 planets not including Pluto and 9 including Pluto.