這個問題就是仁者見仁智者見智了，就像一千個讀者眼裡有一千個哈姆雷特一樣。每個人都有不同的回答。筆者認為最美麗的行星是地球和火星。地球是我們的起源地，是太陽系的珍寶，而火星則是人類最有可能登入的第二顆行星。

I think Earth and Saturn are the prettiest。First taiking the earth，71％ of the earth is covered by oceans and the remaining 29％percent is land，with lush forests and golden deserts. and it is still wearing a white gauze。Looking at the earth from space is like a blue and green planet！

And the Saturn is a yellow planet。It has a large ring。Although Saturn is more than 1 billion kilometers away from us，but ordinary telescopes can also reveal its ring。the Saturn"s rings are so bright because the rings are made of ice。

But according to Cassini"s finder observations，Saturn"s rings weren"t born with Saturn。The rings of the Saturn were formed about 100 million years ago，when dinosaurs were rampant。And scientists speculate that the ring will dark to disappear in 1 billion years。For this problem，do you think？