The Solar System contains the Sun
, eight planets with their moons, and lots of other smaller objects such as dwarf planets
The Solar System © IAU
The above planets are drawn to scale, but are not at the correct relative distances.
The four planets closest to the Sun are called the inner Planets and are typically small, warm, rocky worlds.
Mercury : Venus : Earth : Mars
The four outer Planets are much larger and cooler, and mainly made of gas. As a result, they are known as gas giants.
Jupiter : Saturn : Uranus : Neptune