Unusual signals have been detected coming from the direction of the centre of the Milky Way.
The radio waves fit no currently understood pattern of variable radio source, suggesting that it comes from a new class of stellar object.
It has a very high polarization, with its light oscillating in only one direction that rotates with time.
The brightness of the object varies dramatically and the signal switches on and off seemingly at random.
Scientists hope to learn more about the object when the transcntinental Square Kilometer Array radio telescope comes online sometime in the next decade.
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