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主題: Arp 187星系 AGN supermassive black hole via a 3000-year-long light echo 作者: peter 於 2021-06-11 07:59:21 https://silentgarden.net/astronomy/discovery-of-a-dying-supermassive-black-hole-via-a-3000-year-long-light-echo/
https://www.cnbeta.com/articles/science/1139293.htm https://www.cnbeta.com/articles/science/1139093.htm (https://static.cnbetacdn.com/article/2021/0611/47de5fabb6eff3f.jpg) |