‘There may well be more than 60 billion habitable planets littering the Milky Way, but it’s virtually impossible to make use of that figure. Instead, how about this picture, which shows you how many planets are within 60 light-years of Earth.

In the image, the size of the circle represents the size of the planet, while color indicates the kind of star it orbits: dusky red signifies that it’s spinning around something similar to the Sun, gray means that the star is a different size. Dark circles represent planets the same size as Earth.’ (Gizmodo)

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