The Baltimore Catechism
91. Q. After Christ had remained forty days on earth, whither did He go?
A. After forty days Christ ascended into Heaven, and the day on which He ascended into Heaven is called Ascension Day.
One day He was on a mountain with His Apostles and disciples; and as He was talking to them He began to rise up slowly and quietly, just as you have sometimes seen a balloon soar up into the air without noise. Higher and higher He ascended; and as they gazed up at Him, the clouds opened to receive Him, then closed under Him: and that was the last of Our Lord’s mission as man upon earth. The Ascension took place forty days after the resurrection. (Acts 1).
A. In Heaven Christ sits at the right hand of God the Father Almighty.
A. When I say that Christ sits at the right hand of God, I mean that Christ as God is equal to His Father in all things, and that as man He is in the highest place in Heaven next to God.