Kepler 438b

470 light years away is a planet discovered but the Kepler space observatory known as "Kepler 438b". This planet is very strange not because it has any extreme features, but the opposite because it is, to date the most earth like planet we have ever found. The earth similarity indeed is a standard measure of how similar to earth another planet is with a score of being identical to earth in every way and 0 being nothing like earth. Kepler-438 boasts an impressive earth similarity index of 0.88 making  Kepler 438 super rare, and very special discovered in January 2015, this planet has all the right pre-requisite for alien life most importantly it is a rocky world, like earth and its proximity to its last star puts it in what scientists call the Goldilocks zone which is the holy grail of space exploration. The Goldilocks zone is when a planet is not too close to its parent star that it's too hot for life, yet not too far away that it's too cold water is essential to life, where there's water, there's probably life, but in order to have complex life there has to be a liquid water, which most of the time can only occur in the Goldilocks zone