this post was submitted on 05 Oct 2024
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Neutrino stars, pulsars and magnetars are my favourite entities. A ball the size of a city with the mass of a star, spinning at 500 rounds per second, emitting radiation that would fry anything. It’s so unbelievably badass.
The size of our universe is far from certain, as I understand it. The observable universe is about 93 billion light-years but the entire thing could be thousands or even infinite.