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A comment on UHZ1: NASA Telescopes Discover Record-Breaking Black Hole. Parent comment

Re:UHZ1: NASA Telescopes Discover Record-Breaking Black Hole by hn8305823 on Monday November 06, 2023 @04:50PM (#38169520)
If the Sun were replaced by one solar mass black hole, we would freeze/starve to death but the Earth's orbit would be just as stable as it is now.

In fact Earth might survive (as an ice planet) much longer than it would around the Sun since the Sun is expected to become a red giant and possibly swallow the Earth when it dies.

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Re:UHZ1: NASA Telescopes Discover Record-Breaking Black Hole by dreamcompiler on Monday November 06, 2023 @11:10PM (#38173156)
If the Moon were replaced by a black hole of its same mass, we wouldn't even notice except that the night sky would become moonless and we wouldn't have eclipses any more. The tides would keep happening as usual.
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Re:UHZ1: NASA Telescopes Discover Record-Breaking Black Hole by z3phyr on Tuesday November 07, 2023 @12:50AM (#38173691)
It will evaporate relatively immediately. So no tides.
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Re:UHZ1: NASA Telescopes Discover Record-Breaking Black Hole by limbicsystem on Tuesday November 07, 2023 @04:58AM (#38175075)
It will take longer than the age of the universe to evaporate. So tides. For a while.
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Re:UHZ1: NASA Telescopes Discover Record-Breaking Black Hole by dotancohen on Tuesday November 07, 2023 @01:44AM (#38173930)
Moonlight is actually a very important influence in many natural cycles, all of which would be disrupted.

And as a motivator for both our intellectual curiosity and our scientific curiosity, the lack of a detailed moon in our night sky would have retarded the development of human civilization.

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