Child religion is the conception of religion perceived by children and how children understand and interact with religion. The term child religion may also relate to the study of the role of children in different religions.

Children of The Cosmos is an appellation referencing humanity as a subproduct of The Cosmos and particularly in relation to the destiny of humanity to become reunited with The Cosmos as the progenitor of humanity.

Cocosmosis, or mutual astrosis, is the belief regarding astrosis that the only way to achieve one's own astrosis is the help others achieve their astrosis.

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Contributionism is the Astronist belief orientation on transcensionism involving the notion that one's contributions made to the world provide them with existential purpose or life meaning and that one's individual contributions are instrument to the achievement of one's individual transcension as well as the achievement of wider humanity's transcension.

Cosmolocation is the supernatural ability of a person to be located on two different cosmic progeny simultaneously; it can be compared to the belief in bilocation which is generally confined to a single progeny.

Cosmosis, also known as cosmic reunion and by many other names, is the belief in a process occurring after a person has died in which they are either physically or spiritually reunited with The Cosmos; cosmosis is achieved by all people no matter their beliefs, it is not based on a morality system, and approaches to understanding cosmosis developed three schools of thought known as naturalism, transcensionism, and transtellationism.

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Cryogenicism, also shortened to cryogenism, is the belief in the correctitude of the practice of cryogenics to prevent death through freezing bodies at extremely low temperatures as to preserve them for the eventual creation of cures and other forms of life extension.

The Astronist religion takes a unique view on the topic of death, distinct from all other religious and philosophical approaches to this most pivotal of subjects. The Astronist approach to death can be described as largely naturalistic with some Astronist schools advocating supernatural beliefs