Similar signals have been detected before, but this is the first time that scientists have been able to definitively identify their origins as outside of the Milky Way.
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While looking through archived sky sweeps completed by the Parkes radio telescope in New South Wales, Australia, astronomers discovered mysterious intergalactic radio bursts; powerful signals removed from the galactic plane and originating from different spots in the sky.
Because the data was archived and the bursts so sporadic, the scientists have no way of following up on the oddity, Discovery NewsÂ reports. Later analysis of the bursts indicated that they do not seem to have originated from within our own Milky Way galaxy, but from beyond.