Imaging a Black Hole’s Shadow

As I write this, a conglomeration of radio telescopes scattered across Earth are acting as one giant instrument to try to image the supermassive black hole at the center of our galaxy. It’s no easy feat. A black hole, by definition, is so dense and the gravitational pull so strong that not even light can escape its confines. So how can an object that can’t emit light and that doesn’t reflect light be observed? By looking for its shadow, and that’s exactly what the so-called Event Horizon Tel

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