A mysterious interstellar radio signal has been blinking on

Astronomers have detected a long-running source of slow, repeating radio pulses that can’t be explained by current theories – but it’s probably not aliens.

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New Mexico , United States , Australia , Jocelyn Bell Burnell , Murchison Widefield Array , Western Australia , Milky Way , Very Large Array , Green Men , Astronomy , Pulsars , Radio Astronomy ,