The "Assumption of Mary" is a belief in the Catholic Church that the Virgin Mary, the mother of Jesus, was taken up into heaven at the end of her earthly life. This event is celebrated on August 15 each year and is considered a significant feast day in the Christian calendar. The Assumption emphasizes Mary's special role in salvation history and her close relationship with Jesus. The doctrine of the Assumption was officially declared by Pope Pius XII in 1950, affirming that Mary was assumed body and soul into heavenly glory. This belief is rooted in tradition and is supported by various theological interpretations, although it is not explicitly mentioned in the Bible.