This image from the NASA/ESA Hubble Space Telescope features the spectacular galaxy NGC 2442, nicknamed the Meathook galaxy owing to its extremely asymmetrical and irregular shape.

This galaxy was host to a supernova explosion spotted in March 2015, known as SN 2015F, that was created by a white dwarf star. The white dwarf was part of a binary star system and siphoned mass from its companion, eventually becoming too greedy and taking on more than it could handle. This unbalanced the star and triggered runaway nuclear fusion that eventually led to an intensely violent supernova explosion. The supernova shone brightly for quite some time and was easily visible from Earth through even a small telescope until months later.

Text credit: ESA (European Space Agency)
Image credit: ESA/Hubble & NASA, S. Smartt et al.

这张由美国宇航局/欧空局哈勃太空望远镜拍摄的图片展示了壮观的星系NGC 2442,由于其极不对称和不规则的形状而被昵称为Meathook星系。

这个星系在2015年3月被发现发生了超新星爆炸,被称为SN 2015F,它是由一颗白矮星产生的。这颗白矮星是一个双星系统的一部分,它从伴星那里吸走了质量,最终变得过于贪婪,承担了超出自己能力范围的东西。这导致了恒星的不平衡,并引发了失控的核聚变,最终导致了剧烈的超新星爆炸。这颗超新星明亮地闪耀了很长一段时间,直到几个月后,地球上甚至可以通过小型望远镜看到它。

文字来源:ESA (European Space Agency)
影像来源:ESA/Hubble & NASA, S. Smartt et al.

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