Esonai

Remaining tidally locked to its planet, Goral, Esonai is a toxic world with a lethally thick, hot, crushing atmosphere with a mixture of methane, ammonia, and butane compromising most of its breathable gases. Most all terrestrial life that has evolved on Esonai has grown to stay within its terminator zone, though a few extremophile plants live on the side of the planet exposed to Goral's blistering wind and Eson's extreme temperatures which cause above boiling heats to exist as the norm on the lit side of the moon. As Goral is tidally locked to Eson, Esonai's conditions have some of the worst in the Galaxy. With the dark side typically staying steady at -214°C (-353°F) and the lit side capable of reaching 200°C (392°F), the planet was, at some points, considered unfit for life by ancient scientists, as it is outlined in archives of extinct races, though it is now known to house a large biosphere of bacterial and plant life as well as a few complex organisms, most notably the Isonian species.

Today, it is considered the worst terrestrial world in the Sagittarius Arm, and most off-worlders are warned in advance that high-level enviromental suits, pressure suits, and exo-life support systems should be warn at all times. Not doing so will result in the immediate death of the organism. The Terminator Zone of the planet, where 98% of cities and population centers are located, can still reach lethal temperatures to most sapient life (142°F) which, with prolonged, unprotected exposure, can cause blistering and third degree burns in seconds. It is the epitome of a hostile environment that should highly respected.