An interstellar travel within a human lifetime is considered as utterly impossible. The interstellar travel used Special Relativity is well known. However, there exists the problem of the twin or time paradox. In addition, Space warp using wormhole is also well known. However, the size of the wormhole is smaller than the atom, and moreover, the wormhole is predicted to fluctuate theoretically due to instabilities. Assuming hyperspace as being characterized by imaginary time, it is shown that the limitations due to the extremely long time required for interstellar travel as is set forth by Special Relativity are removed.