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.
木星の様に熱い惑星や 氷でできた惑星　水の惑星 地球タイプの岩石惑星で 「巨大地球型惑星」もあります さらにはダイヤモンドでできていると 推測される惑星もあるのです