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A comment on The wobbling shadow of the M87* black hole. Parent comment

Re:The wobbling shadow of the M87* black hole by ttul on Wednesday September 23, 2020 @11:20PM (#24574924)
No. A black hole could orbit us at the distance of the moon and so long as its mass was similar to that of the moon, it would have no greater effect on our lives than the moon does.
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Re:The wobbling shadow of the M87* black hole by jcims on Wednesday September 23, 2020 @11:44PM (#24575027)
Gravitationally anyway.
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Re:The wobbling shadow of the M87* black hole by zbrozek on Thursday September 24, 2020 @01:02AM (#24575405)
I'd like a Randall Munroe what if on this.
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Re:The wobbling shadow of the M87* black hole by jcims on Thursday September 24, 2020 @01:49AM (#24575648)
Ask and you shall receive:

https://what-if.xkcd.com/129/

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Re:The wobbling shadow of the M87* black hole by imglorp on Wednesday September 30, 2020 @02:07PM (#24641682)
Nice. He answered most of my questions except one. How big does some object need to be to cause harm to Earth as it gets consumed by the black hole moon? Also, I guess we also need to talk about spin and how the accretion disk and quasar radiation beam are oriented to say if it's pointed at Earth or not.
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