Daniel and Kelly’s Extraordinary Universe cover image

Where are all the medium-sized black holes?

Daniel and Kelly’s Extraordinary Universe

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The Universe Never Goes for Half a Box

I think it's their fundamentally alien nature that makes them so fascinating. We know they are really deeply, weirdly different from anything we have seen before and i think that's what sparks our curiosity. You either don't open the box of cookies, or you eat the whole thing. The universe never goes for half a box. And as you say, you can find them in all kinds of sizes out there in space. There're no likea goldy locx black holes - there's only two options, like venti and extra large. These are small, only on the sort of cosmic galactic scale, right? Smaller than a whole galaxy. Still enormous, still more massive than

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