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Calculating the odds of intelligent alien life - Jill Tarter

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Could there be intelligent life on other planets? This question has piqued imagination and curiosity for decades. Explore the answer with the Drake Equation -- a mathematical formula that calculates the possibility of undiscovered life.

What are other kinds of initiatives begun by astrobiologists? While SETI is looking for technologically advanced civilizations, what forms of life are others looking for and where?

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