https://blog.wongcw.com/2020/02/07/%e5%a4%a9%e6%96%87%e5%ad%b8%e5%ae%b6%e8%a7%a3%e5%af%86%e9%81%a0%e5%8f%a4%e6%80%aa%e7%89%a9%e6%98%9f%e7%b3%bbxmm-2599/
天文學家解密遠古“怪物”星系XMM-2599