This is possible but you'd have to deploy it right by a black hole:

lucaslazarus • yesterday at 4:45 PM • 1 reply • view on HN

This is possible but you'd have to deploy it right by a black hole: https://en.wikipedia.org/wiki/Photon_sphere

hidroto • yesterday at 6:41 PM

i wonder how sensitive your equipment would need to be to read it from the back scatter off the interstellar medium.

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