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A comment on Astronomers detect a black hole on the move. Parent comment

Re:Astronomers detect a black hole on the move by marshmallow_12 on Sunday March 14, 2021 @06:08AM (#26454051)
that made me realise that galaxies are moving. Which means that we already knew that Black Holes move?
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Re:Astronomers detect a black hole on the move by hnews_account_1 on Sunday March 14, 2021 @09:46AM (#26455363)
Everything is in constant motion all the time. There's no universal "rest" reference frame although we commonly use the CMB as one for our purposes.
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Re:Astronomers detect a black hole on the move by dreamcompiler on Sunday March 14, 2021 @02:03PM (#26457296)
The interesting issue here is that the black hole seems to be moving relative to its own galaxy, which is unusual.
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