Laser tech could be fashioned into Earth's 'porch light' to attract alien astronomers

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If extraterrestrial intelligence exists somewhere in our galaxy, a new study proposes that laser technology on Earth could, in principle, be fashioned into something of a planetary porch light -- a beacon strong enough to attract attention from as far as 20,000 light years away.

from Latest Science News -- ScienceDaily https://ift.tt/2qtrcuz

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