Rarovan

Rarovan is a fictional celestial body featured in the science fiction novel "The Starfarer's Legacy" by author Elias Thorne. It is described as a gas giant located in the outer rim of the Kepler-186 system, approximately 500 light-years from Earth. Rarovan is notable for its striking aurora borealis, which covers its entire atmosphere due to intense solar winds from Kepler-186f. The planet's atmosphere is primarily composed of hydrogen and helium, with trace amounts of methane and ammonia, giving it a distinct deep blue hue.

The novel suggests that Rarovan possesses a complex system of moons, with one, named Xylos, being a significant plot point. Xylos is a rocky moon with a thin but breathable atmosphere, harboring unique bioluminescent flora and fauna. Explorers in "The Starfarer's Legacy" establish a small research outpost on Xylos to study its ecosystem and search for rare minerals. Rarovan itself is deemed uninhabitable due to extreme temperatures and atmospheric pressure, serving as a backdrop for the more detailed exploration of its moons. The planet's gravitational pull significantly influences the orbits of its moons, creating dynamic tidal forces.