2.5K views · 81 reactions | Kepler 186f an Earth-like world. Subscribe for more videos: goo.gl/CEzuRb | Cosmoknowledge | Facebook

In the search for life beyond Earth, astronomers look for planets in a star's "habitable zone" — sometimes nicknamed the "Goldilocks zone" — where temperatures are just right for liquid water to exist on a planet's surface to nurture life as we know it. An emerging idea, bolstered by a three-decade-long set of stellar surveys, is that there are "Goldilocks stars" — not too hot, not too cool, and above all, not too violent to host life-friendly planets. More info: https://go.nasa.gov/2T19nCR via