Identifying Questions and Hypotheses

In February 2015, an article was on Washington Post on whether we are alone in the universe. Yes, by the far distance apart from the people it is hard to send or transfer signals. Even the star says "hello," it is too hard to hear its' greetings. The question of the study was do we know that we're alone in the universe? Based on the fact that SETI, has been sending transmissions to aliens and Frank Drake said we are going to find out what we will become, by activating SETI, humans know that they are alone and unique in the universe.