While the Scriptures symbolically refer to heaven as being up and hell being down, all we know for sure is that heaven is a real place that is located in a different dimension of reality than the one in which we presently exist. In Acts 1:9 , for example, we read that Jesus “was taken up, and a cloud received Him out of their sight.”
Modern science has demonstrated that it would be possible for an almost endless number of “parallel worlds” to be around us without our being able to perceive them because of differences in their atomic structure. The Scripture contains clear evidence that there are a number of “dimensions” of reality. Recall, for example, the occasion when Jesus appeared to His disciples following His resurrection ( John 20:26-27 ). He passed through closed doors, yet He possessed a solid body, as evidenced by His challenge to Thomas to touch His hands and His side.