There are Jupiter-like planets that are hot, there are other planets that are icy, there are water worlds and there are rocky planets like the Earth, so-called "super-Earths," and there have even been planets that have been speculated diamond worlds.
有些炽热的行星有木星那么大， 有一些就像冰球，有一些行星充满了水， 有一些岩态行星如地球一样，如所谓的“超级地球”， 还有一些被推测为钻石世界的行星。