ELI5. why do scientists always search for radio sygnals in space? Why do they think aliens use that to communicate?

Question

ELI5. why do scientists always search for radio sygnals in space? Why do they think aliens use that to communicate?

In: Technology

Answer 1

It’s pretty much the only thing we can actually search for. It’s not as if we have any idea how to look for some kind of Startreklike subspace communications or similiar SciFi inventions