Two Black Holes Dancing in 3C 75
- tencyo-corp
- 2020年8月31日
- 読了時間: 1分
At the cores of two merging galaxies in the Abell 400 galaxy cluster they are some 300 million light-years away.
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At the cores of two merging galaxies in the Abell 400 galaxy cluster they are some 300 million light-years away.