Epsilon Eridani is one of the closest star systems – our third closest neighbor – making it visible to the naked eye. Named Ran by the International Astronomical Union, after the Norse goddess of the sea, Epsilon Eridani is the fifth-brightest star in the southern constellation Eridanus, which takes the shape of a river. Epsilon Eridani is similar to the Sun, but it is slightly smaller and cooler, with an orange hue. Compared to the Sun, this star has more magnetic activity, and it rotates sl…