- Mercury
- Venus
- Earth
- Mars
- Jupiter
- Saturn
- Uranus
- Neptune
The planets are classified into two types: terrestrial planets and jovian planets.
Terrestrial planets are made mostly of rock and metal. They are relatively small and have a solid surface. The terrestrial planets are:
- Mercury
- Venus
- Earth
- Mars
Jovian planets are made mostly of gas and liquid. They are much larger than the terrestrial planets and do not have a solid surface. The jovian planets are:
- Jupiter
- Saturn
- Uranus
- Neptune
So, the answer to your question is that there are 4 terrestrial planets and 4 jovian planets.