Two astronomers at Columbia University in New York suggest humanity could use Lasers to conceal the Earth from searches by advanced extraterrestrial civilisations. Professor David Kipping and graduate student Alex Teachey make the proposal in a paper in Monthly Notices of the Royal Astronomical Society.
A 22W Laser used for adaptive optics on the Very Large Telescope in Chile. A suite
of similar lasers could be used to alter the...
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