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Scientists have discovered mysterious signals coming from a galaxy 1.5 billion light years away. They were picked up by a telescope in Canada.

The precise cause of the blasts of radio waves is unknown.

There are a number of theories about what could be causing them.

They include exploding stars, stars with strong magnetic fields, stars merging together and - among a minority of observers - some form of alien spaceship!

Canada's CHIME radio telescope detected 13 fast radio bursts, known as FRBs. It also heard a very unusual repeating signal, coming from the same source about 1.5 billion light years away.

This is only the second time that fast radio bursts have been detected.

Studying FRBs is difficult because they are so rare. Therefore, the signals have remained a mystery, with little evidence at all of where they might be coming from.

The flashes only last for a millisecond and has the same amount of energy as the sun produces in a year.

Scientists are planning on studying the radio waves and hope that this new discovery will allow them to answer the mystery of what deep space might be trying to tell us!