Simply that the mortal body does not survive outside the confines of this earth. As I said in a prior post, God does follow His own laws. My point was that, if Christ ascended, it would have been his spirit and not the mortal body leaving this plane.
Apparently you failed to read, or chose not to believe that the human body of Jesus was changed...Glorified...His body went to heaven...
Just as the bodies of Christians will change, be resurrected and move on off into outer space at the appointed time...
Like the book says, "He's not here, He's risen"...You won't find any evidence of Jesus on the planet earth, yet...