If there are sentient beings on planets outside our solar system, we will not be able to determine this anytime in the near future unless some of these beings are at least as intelligent as humans
We will not be able to send spacecraft to planets outside our solar system anytime in the near future, and any sentient being on another planet capable of communicating with us anytime in the near future would have to be at least as intelligent as we are
Any sentient beings on planets outside our solar system that are at least as intelligent as humans would be capable of communicating with us.