7、And now for the science bit! Astronomers can't dig inside the Sun, but they can make predictions about the structure of the star. They know it's formed of a series layers, with energy generated in the very core. The outer layers are actually the hottest.
来看看太阳的剖面图。科学家不能将太阳“解剖”，但可以预测它的内部结构。太阳大气层从内到外可分为光球、色球和日冕3层。最外一层的温度最高。而太阳产生巨大能力的地方是日核。
