CG4：球体与银河
(原标题: CG4: The Globule and the Galaxy)
2023-01-04
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气体云能吞噬星系吗？还差得远呢。在这张特色照片中，这个奇怪的“生物”的“爪子”是一个被称为彗星球的气体云。然而，这个球体已经破裂。彗星球状体的典型特征是头部布满灰尘，尾部拉长。这些特征使彗星球状体在视觉上与彗星相似，但实际上它们有很大的不同。球状体通常是恒星的诞生地，许多球状体的头部都有非常年轻的恒星。这个物体头部破裂的原因尚不清楚。球状体左边的星系非常巨大，距离非常远，只是由于偶然的叠加才被放置在CG4附近。探索+拓展：APOD研究生研究职位开放
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Can a gas cloud eat a galaxy? It's not even close. The "claw" of this odd looking "creature" in the featured photo is a gas cloud known as a cometary globule. This globule, however, has ruptured. Cometary globules are typically characterized by dusty heads and elongated tails. These features cause cometary globules to have visual similarities to comets, but in reality they are very much different. Globules are frequently the birthplaces of stars, and many show very young stars in their heads. The reason for the rupture in the head of this object is not yet known. The galaxy to the left of the globule is huge, very far in the distance, and only placed near CG4 by chance superposition. Discovery + Outreach: Graduate student research position open for APOD
© Mike Selby