Kepler 186f rekindled our hopes and dreams of colonizing space. “Habitable exoplanet!” we heard, “Space Travel IS NOW!” Top that off with multiple breakthroughs in companies like SpaceX and BAM. The Future is now! But there’s a small problem… When we say a planet is habitable, we aren’t REALLY saying what we think we are saying. “Habitable” means something else. Is Kepler 186f habitable, in the true sense of the word? And if not, what other planets should we be looking at? Watch this episode of PBS SpaceTime and find out!