[酷图] [分享] 气泡星云

2003/6/17
Credit:  Brad Ehrhorn & Adam Block, NOAO, AURA, NSF

说明: 这是一个名为NGC7635的气泡星云，正被在它中心大质量恒星BD+602522的恒星风向
外推挤着，它的右下角则是一片巨大的分子云。这个云气可以容纳气泡状的膨胀气体，却
被气泡中心恒星的热辐射所排挤。这些辐射将分子云中密度较高的区域加热并使之发光。
气泡星云的直径大小约十光年，是气壳与恒星所组成的大型结构中的一部分。气泡星云位
于仙后座方向，用小型望远镜就可以观测到。

: It's the bubble versus the cloud. NGC 7635, the Bubble Nebula, is being pushed out by the stellar wind of massive central star BD+602522. Next door, though, lives a giant molecular cloud, visible above to the lower right. At this place in space, an irresistible force meets an immovable object in an interesting way. The cloud is able to contain the expansion of the bubble gas, but gets blasted by the hot radiation from the bubble's central star. The radiation heats up dense regions of the molecular cloud causing it to glow. The Bubble Nebula, pictured above as a color negative to help bring up contrast, is about 10 light-years across and part of a much larger complex of stars and shells. The Bubble Nebula can be seen with a small telescope towards the constellation of Cassiopeia.


原文来自： http://antwrp.gsfc.nasa.gov/apod/ap030617.html (linq编译)

左上角那个星是什么星，是行星吧。

能看到的行星没有几颗，应当不是。

行星不发光

应该是处于青壮年的恒星。。。

最初由 nhzoulei 发表
[B]左上角那个星是什么星，是行星吧。

阁下搞笑本领不错。呵呵。︿＿︿