Binary star system

A binary star system was a star system in which two stars revolved around a common center of mass. Supernovas were twice more likely to occur in binary star systems. Sometimes, however, the pair would be stable enough that planets would form around them, such as with the Tatoo system, Selvaris system and the Abyss system. Such planets often orbited the binary star in a figure-of-eight fashion, as was the case with Byss. Having two suns did not lead to an orbiting world being a hot and arid one, as was the case with Tatooine early in its planetary history. In 25,793 BBY, Tatooine was a lush and verdant world which was home to the sentient Kumumgah species. After defying their Rakatan masters, the planet was subject to an orbital bombardment as punishment that caused the silica in the soil to fuse and become glass, which over time became sand and caused a dramatic climate shift, resulting in Tatooine becoming a desert world.

Text and facts from the “Binary star system/Legends” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.