Solar system。

There are eight planets In the solar system（太阳系）。 The closest one is Mercury（水星）。The Second closest one is Venus（金星）。It's of the same size of the earth。Oxygen。

The Earth is the third planet in the solar system。It has The oxygen which the human human depend on。

Jupiter（木星） is Unlike the Earth in almost every way。

The planet Mars（金星） can be Visible by the naked eyes.

Saturn（土星），There are many similar  between Saturn and Jupiter。

Uranus （天王星）Is unusual Because it's Titled。

Neptune（海王星）Is the fastest planet from the sun。