Mysterious fast radio burst signals that could be evidence of advanced alien civilisations are spotted closer to Earth than ever before
Experts discovered 19 signals emanating from deep space earlier this month
Some of the blasts were the closest and brightest FRBs ever found, they said
They posit may be coming from a neutron star or a new and far-flung alien race
Among them was one called FRB 171020 a hundred or so million light years away
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