Pluto is not classified into either the terrestrial or jovian planets due to its special features 冥王星可算是九大行星中的蝙蝠,它不是类地行星,亦不属于类木行星。
The mass of jupiter is about 300 times that of the earth , however its density is low . in fact , these are general features of jovian planets 木星的质量大约是地球的300倍,但和其它类木行星一样,它的密度很低。
Its density is roughly 2 . 3 times that of water . usually , the jovian planets have density less than 2 , while terrestrial planets have density more than 5 冥王星的密度约为水的2 . 3倍通常来说,类木行星的密度会小于2 ,而类地行星的密度则大于5 。