These are the newly added mysteries as instituted by John Paul II. The Mysteries of Light are centered on the ministry of Jesus Christ.
The events highlighted in the mysteries of light form the basis of most Christian beliefs. John Paul II suggested that the mysteries of light are to be prayed on Thursdays.
Features of the Mysteries of Light:
The Baptism of Jesus Christ
-During His baptism in the River Jordan, the heavens opened and the spirit of God descended upon Jesus Christ in the form of a dove.
The Wedding at Cana
-Jesus performs His first miracle by transforming water into wine at the wedding at Cana.
The Proclamation of the Kingdom of God
-Jesus proclaims the good news about God’s kingdom to all who were willing to listen.
The Transfiguration
-Jesus Christ transfigures himself before James, John, and Peter. The three could see Him conversing with Elijah and Moses in what seemed like a spiritual realm.
The Institution of the Eucharist
-The disciples share the Last Supper with Jesus Christ, thereby marking the introduction of the Holy Eucharist.
There are four sets of mysteries for a total of 20 mysteries. —Source: Catholicism Website