The apparatus will search for light emissions from distant galaxies. Scientists say light beams would be a logical way for alien civilizations to attempt communication.

BBC:

A new optical telescope designed solely to detect light signals from alien civilisations has opened for work at an observatory in Harvard, US.

It will conduct a year-round survey, scanning all of the Milky Way galaxy visible in the Northern Hemisphere.

Seti is an exploratory science to scour the cosmos for signatures of technology built by alien beings.

Some experts believe alien societies are at least as likely to use light for communicating as radio transmissions.

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