Catechism of the Catholic Church §656 — excerpt
Faith in the Resurrection has as its object an event which as historically attested to by the disciples, who really encountered the Risen One. At the same time, this event is mysteriously transcendent insofar as it is the entry of Christ's humanity into the glory of God.
This translation is under copyright, so only the cited words are quoted here. Follow the link for the full text. Translation: English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va.