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.
Олег Давыдов (Редактор отдела «Интернет и СМИ»)
,详情可参考爱思助手下载最新版本
近日,广东深圳的龙先生在自己的博客上发布了两篇文章,称自己为80岁老母亲的手机设置了三重防诈骗的“防火墙”,但在诈骗分子的精心谋划下,母亲账上的95万元在7天内分3次被转走。
Source: Computational Materials Science, Volume 267