Could we eavesdrop on aliens by detecting signals relayed

We'd also be able to communicate with our own interstellar probes using the same method

Researchers may have found a new way to detect signals from advanced alien civilizations.

Einstein's theory of general relativity tells us that the gravitational pull of massive celestial objects

When it does so, it focuses and magnifies light like a telescope in an effect called gravitational lensing

Graduate students in a course about the search for extraterrestrial intelligence (SETI) at Penn State suggest

we might even be able to eavesdrop on extraterrestrial communications being relayed around

The group theorizes that vast interstellar communication networks could use gravitational lensing

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