Religion and Philosophy in the Third Space Age

Noncanon.

Christianity

Minor and Extinct Sects

Reshanki Christianity

Reshanki Christianity holds that the End of Days is at hand and the Antichrist has appeared in the form of the Posthumans, who travelled back in time to prevent the rapture. It was founded on Corregidor during the early 2140s and never achieved a very large following, but the (extremely rich) founder's big-budget televangelism campaigns and public clashes with posthuman worshippers gave it a media presence above its weight. Mr. Reshanki retired to his ranch during the 2150s and has refused all interviews since, and the faith has no practicing worshippers remaining.

Hinduism

Still trucking in India.

Minor Faiths and Philosophies

Extinct Faiths and Philosophies

Kirnaism

Kirnaism preaches that all major prophets were posthumans who travelled back in time.