经典科普资源 · 太空旅行者
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Big and Blue What is the seventh planet from the sun? It is big. It is blue. It is Uranus!
It is so big that 63 Earths could fit inside it.
It is an ice giant. It is mostly liquids. They are icy.
There are gases. One is methane. methane gas It gives Uranus its blue color.
All planets spin. But Uranus is different. Why? It spins on its side.
