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神秘宇宙“钥匙孔”的哈勃同行 哈勃太空望远镜的奇特肖像展示了 NGC 1999,它是猎户座中的一个反射星云

位于猎户座星云附近,猎户座星云是离地球最近的大质量恒星形成区域。NGC 1999 本身就是近期恒星形成的遗迹——它由新生恒星形成时留下的碎片组成。



这张来自 NASA/ESA 哈勃太空望远镜的奇特肖像展示了 NGC 1999,它是猎户座中的一个反射星云。NGC 1999 距离地球约 1,350 光年,位于猎户座星云附近,猎户座星云是离地球最近的大质量恒星形成区域。NGC 1999 本身就是近期恒星形成的遗迹——它由新生恒星形成时留下的碎片组成。

就像在路灯周围卷曲的雾气一样,像 NGC 1999 这样的反射星云会在嵌入式光源的光线下发光。在 NGC 1999 的情况下,这个源是前面提到的新生恒星 V380 Orionis,它在这张图像的中心是可见的。然而,NGC 1999 最显着的外观是其中心的显眼孔,类似于宇宙比例的墨黑色钥匙孔。

这张图像是根据 1999 年维护任务 3A 后不久的档案广域行星相机 2 观测结果创建的。当时,天文学家认为 NGC 1999 中的暗斑是一种叫做 Bok 球的东西——一种致密、冷的气体云、分子和遮蔽背景光的宇宙尘埃。然而,使用包括欧空局赫歇尔空间天文台在内的一系列望远镜进行的后续观测表明,暗斑实际上是一个空旷的空间区域。NGC 1999 中心的这种无法解释的裂痕的起源仍然未知。

文字来源:欧洲航天局 (ESA)


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Author: Davide

Since 2012, Davide has accumulated rich experience as a technical journalist, market analyst, and consultant in the additive manufacturing industry. As a journalist who has been reporting on the technology and video game industry for over 10 years, he began reporting on the additive manufacturing industry in 2013. He first served as an international journalist and then as a market analyst, focusing on the additive manufacturing industry and related vertical markets. And the directory of the world's largest additive manufacturing industry companies.

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