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A comment on Object firing signals at Earth every 44 minutes. Parent comment

Re:Object firing signals at Earth every 44 minutes by chasd00 on Monday June 09, 2025 @05:26PM (#44229704)
aren't pulsars and magnetars very small when talking about stars and planets? Google's AI says about 20km in diameter but would need to double check that. On the other hand, IIRC the energy output of a pulsar compared to its physical size is pretty scary. You wouldn't want one in your neighborhood.
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Re:Object firing signals at Earth every 44 minutes by rkagerer on Monday June 09, 2025 @06:43PM (#44230372)
Yes. Here are fact checks for those who don't trust the easy AI answer:

https://www.britannica.com/science/pulsar

https://en.m.wikipedia.org/wiki/Magnetar#Description

They are both forms of neutron stars, which average around 20km but are the densest objects known to man. Fun fact, one sugar cube of their material would weigh about as much as a mountain (https://imagine.gsfc.nasa.gov/science/objects/neutron_stars1...).

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Re:Object firing signals at Earth every 44 minutes by IAmBroom on Tuesday June 10, 2025 @09:51AM (#44236816)
> but are the densest objects known to man

Only in the sense that black holes don't have finite densities.

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