Habitability Grade

The habitability grading system for humans is a framework utilized by the Thoria Empire to evaluate the potential of various planets for human settlement. This classification is solely focused on determining the level of adaptability and comfort that humans can expect on a given planet. It takes into account factors such as atmosphere composition, climate stability, available water sources, and the capacity for agriculture.
The system is not intended to assess the habitability of other alien species or forms of life. It also does not consider cultural or sociopolitical factors that might influence a planet's suitability for colonization. Rather, the grading system serves as a pragmatic tool to guide decisions related to resource allocation, colonization strategies, and infrastructure development.
== Grades ==
* Grade I - Hospitable: Planets classified under Grade I are ideal for human habitation. They possess a breathable atmosphere, stable climate, abundant water sources, and fertile land for agriculture. These planets offer a comfortable environment with minimal challenges to human settlement and development.
* Grade II - Accommodating: Grade II planets are suitable for human habitation but may have minor limitations or challenges. While they offer breathable air and sufficient resources, they might experience occasional weather extremes or limited land availability for expansion. With proper infrastructure, human colonies can thrive on these worlds.
* Grade III - Challenging: Planets in Grade III have habitable zones, but they present notable obstacles to human habitation. Harsh climate conditions, periodic resource scarcity, or geological instability may require advanced technology and adaptation for sustainable settlement. Despite challenges, determined human colonies can establish viable communities here.
* Grade IV - Hostile: Grade IV planets pose significant challenges to human habitation due to extreme conditions. Harsh climates, toxic atmospheres, or limited access to resources necessitate advanced terraforming or enclosed habitats for survival. Settlements on Grade IV planets require significant technological investment and ongoing maintenance.
* Grade V - Uninhabitable: At the highest end of the scale, Grade V planets are fundamentally unsuitable for human habitation without extensive, resource-intensive modifications. Harsh radiation, extreme temperatures, or highly corrosive atmospheres make colonization unfeasible. These planets may serve as scientific research sites but are not viable for human populations.