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In new research, Adam Frank and Woodruff Sullivan offer a new equation (bottom row)'The question of whether advanced civilizations exist elsewhere in the universe has always been vexed with three large uncertainties in the Drake equation,' said Adam Frank, professor of physics and astronomy at the University of Rochester and co-author of the paper.'We didn't know how many of those stars had planets that could potentially harbor life, how often life might evolve and lead to intelligent beings, and how long any civilizations might last before becoming extinct.' Pictured is a plot of human population, total energy consumption and atmospheric CO2 concentration from 10,000 BCE to today.Scientists used data such as this to estimate how quickly a civilization might die out'This shifted focus eliminates the uncertainty of the civilization lifetime question and allows us to address what we call the 'cosmic archaeological question' - how often in the history of the universe has life evolved to an advanced state?We still dont have the proof of extraterrestrial intelligent life yet but some of the Drake factors can be addressed with more accuracy.In our current Exoplanet count we puts the total number of Exoplanets somewhat north of 3300. Originally the planet hunting results were more limited, providing us with the ability to find only the biggest Jupiter sized planets. Other planets might support simple, single-celled organisms. Only some of those planets have the right conditions to support life. Some planets might support complex organic molecules -- proteins and nucleic acids -- and nothing else.

Fra­nk D­rake had to account for all of these variables in developing a formula to quantify the odds of finding extraterrestrial life.Trying to calculate the probability that extraterrestrial life exists in the universe is actually quite complicated. Finally, even organisms that have adapted extremely well to their environments don't last forever. And still others might support multicellular organisms, including those advanced enough to develop the technologies to travel or send signals into outer space.Drake equation is Bayesian-derived probabilistic argument which is useful for us to realize how much we are a part in the universe. This Drake equation calculator is used to find the number of active and intelligent civilizations from earth in the Milky Way Galaxy.Enter the parameters inside the calculator and find the number of possible radio communication civilizations.It also provided the means to quantify with a value the number of potential civilizations that emitted some form of intelligent signals that could be picked up by our current technology at the time.Drake had formulated this equation prior to any Exoplanet research and finds but as it turns out, those finds change everything...As you can imagine and for those familiar with the equation, we dont have actual data for MOST of the Classical Drake equation factors, but they are guesses, based on human trends, human technology leaps, and so on.So with only one known life-bearing planet at the time, ours, the calculation of the ultimate value for the Drake Equation was always a conservative guess based on comparison to the progress of human civilization and the technologic precipices we faced.Where, N = Number of Communicative Civilizations R = Rate of Formation of Suitable Stars (Stars Such as Our Sun) fp = Fraction of those Stars with Planets., the average lifetime of such advanced civilizations.