They are very excited about this discovery at NASA because of its implications for other similar planets:

“This discovery does confirm that Earth-sized planets do exist in the habitable zones of other stars,” Quintana said during a Thursday news briefing at NASA Headquarters.

Kepler-186f goes around an M-type dwarf star that’s smaller and cooler than our sun. But it orbits much closer to its parent star than Earth does, within what would be Mercury’s orbit in our own solar system. Those two factors combine to produce an environment that could allow for liquid water on the surface, assuming that the planet had a heat-trapping atmosphere.

What do you think could this planet harbor extraterrestrial intelligence?  Or perhaps kepler 452-b?

How would you suggest searching for evidence?