On April 17, 2014 astronomers discovered the first Earth-sized planet that is believed to have the capability to support life. The planet, now called Kepler-186f, is 10% larger than Earth and is within the ‘habitable’ zone as it orbits its host star. The newly found planet is the right distance for liquid water to pool on its surface, but we don’t yet know what kind of atmosphere it has which can determine its temperature. The planet is located in the constellation Cygnus and is being referred to as an Earth cousin. Since it is 500 light years away we know very little about Kepler-186f and its composition. Unfortunately, it would take approximately 100 million years to get there even on the fastest space craft. So for now we have to examine this wonder through a telescope and listen closely for radio signals.
For more information on this new discovery watch this video from NASA.