But the arXiv paper describes an interstellar radar whose Earth intensity is 10% of insolation over its ground source, 10,000 km2? "Not immediately destructive to airplanes or birds." The paper fails to mention dispersion that I see but certainly there will be some. So probably a minor annoyance at most.
Also, cost $20 trillion. I'm impressed to find a case where imaging looks more expensive than sending an interstellar probe, or even several probes. Still faster, though.
no subject
But the arXiv paper describes an interstellar radar whose Earth intensity is 10% of insolation over its ground source, 10,000 km2? "Not immediately destructive to airplanes or birds." The paper fails to mention dispersion that I see but certainly there will be some. So probably a minor annoyance at most.
Also, cost $20 trillion. I'm impressed to find a case where imaging looks more expensive than sending an interstellar probe, or even several probes. Still faster, though.