"In 1961, Frank Drake wrote down an equation for the probability of a contactable alien civilization living on another planet in the Milky Way. This is known as the Drake equation. It tells us that there is a chance that we may coexist with another civilization but the probability is still quite uncertain. Carl Sagan once suggested that as many as a million alien civilizations could populate the Milky Way, but he later revised this down, and others since have estimated that the value is just one, namely humans ...
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No, we are not over yet. After discussing the topic with my friend’s Dad (he is a doctor), I’ve made a list of things you need to understand and avoid anxiety attacks (hard to breathe moments).
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