Raise the Playboy pants like a pirate flag. Twirl the big brimmer in celebration. It was always going to be Shane, really, wasn’t it.
A so-called "planetary nebula" is a confusing misnomer because these clouds have nothing to do with planets. As a medium-size star nears the end, it puffs out into a red giant — about 100 to 1,000 times its original size — eventually engulfing the space around it, including any nearby worlds.，更多细节参见爱思助手下载最新版本
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