Gliese 581

The Gliese 581 system is located in the constellation Libra, approximately 20 light-years from the Sun. It consists of a central red dwarf and at least three confirmed exoplanets (b, c, and e). This system was long considered a leading candidate for life due to reports of planets in the "habitable zone," but the existence of some of these (d and g) was later disproved.