Strange, powerful signals from deep space called fast radio bursts are slippery little suckers.
Most of them just flash once, a mysterious huge spike in the radio data out of nowhere, lasting just milliseconds at most. They can’t be predicted, and because they’re so brief, they’re incredibly hard to trace.
Hard; but not impossible. Less than a year ago, for the first time, astronomers announced they traced one of these mysterious one-off signals to its source galaxy. Since then, their techniques have allowed them to trace three more.
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