Black Holes, Lifeloggers, and Space Brains

Here’s some of what I’ve written and coded for New Scientist: Black holes, space brains, hunting for planets around distant suns, why honey is stringy, and more…

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Primes!

The fundamental theorem of arithmetic is, as the name suggests, pretty fundamental. I built an interactive infographic which does a better job explaining it than I could do using words….

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Getting Nothing for Something (and Vice Versa)

Energy isn’t conserved. It can be — and is — created and destroyed. Your high school physics teacher lied to you. Or, more likely, your high school physics teacher was mistaken. And your college physics professor was probably mistaken too….

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Big Numbers and Really Big Numbers

Astronomy and cosmology involve some big numbers: a hundred million miles to the sun; six trillion miles in a light-year; two million light-years — ten billion billion miles, a one with 19 zeros after it — to the nearest galaxy. These are huge numbers, and it’s hard to get your head around them directly. But with a little bit of work, it’s not too bad. For example, a million isn’t actually that big of a number: get a cube of something small (marbles? BBs?) with a hundred objects on each side, and there are a million of those objects in that cube. Get a thousand of those cubes — a bigger cube, with ten of the smaller cubes on each side — and you’ve got a billion. A million seconds is only 11 and a half days; a billion seconds is 31 and a half years….

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