by Seth Shostak, Senior Astronomer
It's so far away that even if you booked a trip on the speediest of our rockets, you'd have 100 million years to polish your Sudoku skills en route to Kepler 186f.
That's probably not going to happen. But what has happened is that a team of astronomers, after carefully combing data from NASA's Kepler space telescope, has finally nailed a world that might be similar to our own.
But is it inhabited?
Dale Andersen's work at the Queen Maud Land, Antarctica is featured in the Winter 2013/2014 issue of the Explorers Journal which offers firsthand reporting from those pushing the limits of knowledge and human endurance.