As mankind eventually lifted their gazes and ambitions to the star-scape, it became obvious they would need more advanced forms of energy to power their more advanced forms of technology. The solution they landed on, MSF, happens to have radioactive elements. While sun-cells, the kind that power handheld implements, don’t pose a meaningful threat, even over long periods of exposure, cores are a different story. Sun-cores, the kind that power mantlemail suits and ships, contain miniature synthesised suns - these are supremely radioactive. While their casings are sturdy, significant damage may cause the sealing to crack and fail, seeping otherwise contained radiation. Sun-cores also eventually die, and when they do, they supernova and destroy their own casing, casting out a blast that halves freighters and leaves the area doused in unsafe levels of radiation.

Nuclear power was theorised and brought into reality thousands of years before sun-cores, and as safe methods for containing, handling and disposing were being developed, concerns of preservation were raised, especially as nuclear warhead production came and went. 

If something catastrophic happened to the world, there is no guarantee that the delicate procedures to safely dispose of radiation would be preserved, the ways to safely navigate and mitigate its effects. There is one thing that survives all apocalypse, all manners of catastrophe, so long as one person remembers it: religion. A church was founded with this mission in mind, with the intent of establishing and impressing the importance of safeguards, containment, and disposal of radioactive materials and matter. The Church of Caution, or simply The Caution, now boasts a significant faith base across the Galactic Webbing. 

Sun-cores in most ships have space around it for members of the faith to sit and pray, inspecting the core constantly to check for wear, damage, or signs the core’s lifecycle is nearing its end. When one of these are sighted by a proactive member of the faith, or if a core is simply due a check-up, the Church sends a priest to carry out an assessment of the integrity of the casing and approximate the remaining lifespan of the sun within the core. A priest is always assigned to oversee maintenance efforts, a standard that all companies that handle sun-cores, no matter how menial the process, must employ. The Church is funded by the DUSC, and so it usually will cost nothing to the owner of said sun-core for a priest to conduct an inspection.

Many priests of the caution are on standby at any time to receive assignments. Some prefer to find a monastery and remain there while awaiting assignment by the Church. Others prefer to roam, their assignments becoming based on local demand, as designated by the Church.