About 70,000 years ago Scholz’s star came within 0.8 light years of the Sun.
The Red Zone
Recently there’s been news of the discovery of the closest potentially habitable exoplanet yet. Named Gliese 832 c, it is a “super-Earth” orbiting in the habitable zone of a red dwarf star. In April of this year, there was news of the “most Earth-like planet yet”. Named Kepler 186 f, it is a super-Earth orbiting a red dwarf star. In 2012, there was an announcement of the “most habitable exoplanet yet” named Gliese 581 g. It is a …wait for it… super-Earth orbiting a red dwarf. Whenever a new potentially habitable world is announced, it will likely be a super-Earth orbiting a red dwarf. But why?