點解在八大行星，得地球個名個尾冇個星字？

因為別的行星在天上(宇宙),我們在地球上,而幫這些天體起名的是我們人類,在我們看來,出了地球以外的,視覺上全是天上的星星,所以它們名稱後面全有星字,以及藍星係keroro軍曹裡面嘅keroro小隊先會講ga!!

keroro小隊先會講!!!!!!!

Because We live in here, so the people will chose a name is the most the e the name

i think it calls 地星 before, but in english, all the 行星, just have a name, without a star after it! Chinese names are translated from english! but i like 藍星, it sounds pretty!