There are 100 billion stars in our Milky Way galaxy. Based on everything you have learned in this course, and any other ideas you may have, make an estimate of the number of planets in our galaxy on which some type of life has formed.
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There are 100 billion stars in our Milky Way galaxy. Based on everything you have learned in this course, and any other ideas you may have, make an estimate of the number of planets in our galaxy on which some type of life has formed.