If quantum communication exists, that could be a win for advanced technologies on our planet, but the process would make it impossible for us to detect it without some serious equipment upgrades.
The Great Filter is a hypothesized event or situation that prevents intelligent life from becoming interplanetary and interstellar and even leads to its demise. Artificial Super Intelligence could be the Great Filter.
Spanish professor argues that that water or other liquid-dwelling aliens, as well as civilizations on super-Earths, may actually be trapped on their planets due to "physical limitations".
While some might take the total absence of contact from aliens as a rather bleak sign that our search for extraterrestrial life is all in vain, a new study explains why we shouldn't give up hope just yet – we just need to exercise a little patience.