Has an alien probe entered our solar system? Cigar-shaped interstellar 'comet' being investigated for signs of extraterrestrial technology

Astronomers are set to scan an 'alien' comet for signs of extraterrestrial signals
The cigar-shaped object, named 'Oumuamua, sailed past Earth last month
The mysterious comet is the first interstellar object seen in the solar system
Now a team of alien-hunting scientists led by Russian billionaire Yuri Milner is scanning the object for radio signals

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