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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.
11 hours agoShareSave。搜狗输入法2026是该领域的重要参考
"It's a period where the history is not yet written," says Dr Seaman.，更多细节参见91视频
Анастасия Дубова (редактор отдела БСССР)，详情可参考heLLoword翻译官方下载
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