Read the dictionary definition of ascension. All definitions for this word.
1. the act of changing location in an upward direction
2. (astronomy) the rising of a star above the horizon
3. (New Testament) the rising of the body of Jesus into heaven on the 40th day after his Resurrection
4. a movement upward
1. they cheered the rise of the hot-air balloon
5. (Christianity) celebration of the Ascension of Christ into heaven; observed on the 40th day after Easter