Ask Ethan: Do signals degrade as they travel through space?
Signals from distant cosmic sources change during transmission but do not deteriorate; instead, they undergo alterations that scientists can typically account for and correct.
Cosmic radio station could probe early universe from far side of Moon
"Depending on the technical feasibility, the funding landscape, and the appropriate infrastructure, we anticipate being able to deliver such a system within five years of the end of the study."