What's all this, then?
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  • The size of the universe

    Jan 2, 2020 science astronomy

    As a first blog post for 2020, I'm dusting off one from my previous blog, which I've edited only slightly. I've been looking up at the sky at night recently, and thinking about the sizes of things. Now it's all very well to say something is for example a million kilometres away; that's just a number, and as far as the …

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