The planets of our solar system are large objects that orbit around the Sun. Although the may look like stars when viewed from the Earth, they do not produce light themselves. Instead, they reflect the Sun's light back towards us. 

Some planets have satellites known as moons. 

The four planets located closest to the Sun are rocky planets.

The planet closest to the Sun is called Mercury. 

Venus is located between Mercury and Earth. 

The third planet from the Sun is our planet, Earth. It is located at a perfect distance from the Sun in terms of supporting light: it is not too close (which would result in extremely high temperatures) or too far away (which would result in extremely cold temperatures). 

The fourth rocky planet of the solar system is our neighbor Mars. 
Mercury, Venus, Earth and Mars are all rocky planets.