Exoplanets are terrestrial planets that orbit stars outside of our own solar system. Currently, 1700 have been discovered, with 12 being described by NASA as Earth-like and within the habitable zone. This shows that 1 out of every 141 exoplanets discovered so far could contain both liquid water and life.

An excellent feature of cutting edge science. Given the nearly unimaginable size of the universe, and the extrapolated potential number of inhabitable worlds, based on this research, the idea of extra-solar life has to be considered a most likely occurrence.