Another quick look at exoplanets
If you would like to keep track of the latest in the search of planets that may harbor life, we suggest you consult this Catalog of Habitable Planets. These are terrestrial (rocky) planets that orbit within their star's circumstellar habitable zone and with conditions roughly comparable to those of Earth. On November 17, 2017 the total number of planets in that list was 53, with the distribution as shown in that screenshot. Why not check to see what it is today?