From the time when humans started to observe the celestial bodies and stars from the telescope, there was a question that was very common at that time and even today it’s on fire; “are we alone in this universe?”, many stories, articles, books, theories, research papers have been published answering this question by some of the famous personalities of the past and present, but we failed to find the answer. There was a time when space exploration was at its peak, but the information and data were not organized, no specific pattern was created to understand this data. In the year 1961, an American astronomer and astrophysicist Frank Drake proposed an equation that is used to find, understand and identify the number of active and communicative extra-terrestrial civilizations on our milky way galaxy and from then this equation is known as Drake’s Equation. Actually, this equation is not accurate for understanding the existence of extra-terrestrial life, Drake proposed his equation for the first scientific meeting of SETI (Search for Extra-Terrestrial Intelligence).
Let’s get deep into this equation, the equation is:
N = R* × f p × n e × f l × f i × f c × L
Where, N = the number of civilizations in our galaxy with which communication might be possible
R∗ = the average rate of star formation in our galaxy