A new study has estimated that at least 1 in 6 stars has an Earth-sized planet. We know there are a lot of stars in our Milky Way Galaxy so when the math was done this turned out to be at LEAST 17 BILLION Earth-sized planets! Wow, that is a big MINIMUM number!
If you have such a planet inside of the "habitable zone" of its star, essentially an area where the temperatures on the planet would allow for the presence of liquid water, you can't help but think about the possibility of life.
This study adds to those that have determined that planets abound in our galaxy and therefore the rest of the Universe. If there are so many other Earth-sized planets out there as well, life must be teeming throughout the galaxy and Universe.
Read More ABout It: http://www.cfa.harvard.edu/news/2013/pr201301.html
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