"Artist's conception of the Kepler-11 planetary system. By searching for planets that pass directly in front of their star, the Kepler space telescope hopes to find many Earth-like worlds in the near future. Image credit: NASA/Tim Pyle"
Put all these understandings (and more) together and you have a template for life beyond Earth. The increasingly credible hypothesis that the massively large number of stars in the known universe are home to billions of planets in potentially habitable zones just adds to the logic of life.