Naelus

Naelus is a fictional planet in the Nebula Expanse setting, used in novels, games, and fan media. It is described as a temperate, ocean-covered world orbiting the outer region of the Svar system.

Naelus orbits a K-type star, with an orbital period of about 360 Earth days and a semi-major axis near 1.1 AU. The planet has a radius about 0.92 Earth radii, a mass around 0.78 Earth masses, and surface gravity near 0.85 g. Its atmosphere is Earth-like, dominated by nitrogen with substantial oxygen and trace greenhouse gases, contributing to a moderate climate.

Said to have global oceans covering roughly 60 percent of the surface, with scattered archipelagos and low-lying continents. Seasonal variation is moderated by oceanic heat capacity, yielding average surface temperatures in the mid-teens Celsius.

Naelus shows no confirmed intelligent life in canonical material, but oceanic ecosystems with microbial communities are suggested by probe data and sample analyses. The world is commonly used as a stage for exploration narratives and environmental resilience themes.

In official and fan publications, Naelus serves as a testbed for climate modeling, hydrography, and planetary geology, with maps and datasets shared in wikis and role-playing guides.

Naelus is a fictional entry and not a real celestial body. See also: fictional planets, Nebula Expanse.