A red giant is a star that has moved beyond its main sequence phase and is undergoing death. This process results in a significant expansion in size, potentially engulfing any orbiting planets. These stars become incredibly large; should a planet be situated nearby, it would experience extreme heat, rendering it largely unsuitable for habitation by many species. Note that red giants are smaller in comparison to red supergiants.
The sun within the Bastatha system serves as an illustration of a red giant star, a factor that contributed to making Bastatha largely unlivable. Sokor represents another instance of a red giant.