Short answers, pulled from the story.
The Catholic Church has an estimated 1.28 to 1.41 billion baptized members worldwide as of 2026, making it the largest Christian church. According to the Annuario Pontificio, membership was 1.406 billion at the end of 2023, about 17.4 percent of the world population.
The Catholic Church consists of 24 autonomous, or sui iuris, churches: the Latin Church and 23 Eastern Catholic Churches. They reflect historical and cultural diversity rather than differences in belief, and together they are organized into nearly 3,500 dioceses and eparchies governed by bishops.
The word "catholic" comes from the Greek katholikos, meaning universal, and is first attested as an adjective for the church in the early second century. The first known use of the phrase "the catholic church" appears in a letter written around AD 100 by Ignatius of Antioch to the Smyrnaeans.
In the Gospel of Matthew, Christ names Peter as the "rock" upon which his Church will be built, and the Catholic Church considers the bishop of Rome, the pope, to be the successor of Saint Peter. Some scholars hold Peter was the first bishop of Rome, while others argue the papacy does not depend on that claim.
The Eucharist is one of the seven sacraments and is described as the source and summit of the Christian life, celebrated in the Mass. Catholics believe that through consecration by a priest, the bread and wine become the body and blood of Christ, a change called transubstantiation.
Pope Leo XIV is the current pope, elected on the 8th of May 2025 in a papal conclave following the death of Pope Francis. He is the first Augustinian pope, the first North American pope, born in Chicago, and the first pope of Peruvian citizenship.