Astrophysical jets treated as experiment in the Cyber Space Laboratory

Cyber space experiment, utilizing a combined system of fast computer plus 3 D visualization system proves to be a powerful approach especially in non-l inear astrophysical magnetohydrodynamic problems, among others. This is bec ause (a) problems in extreme situations in astronomy, with which the active experiment was thus-far impossible, can now be taken into the experimental set up in the Cyber space, and some active experiments can be made, (b) ex perimental approach is useful for non-linear problems that develop often be yond human expectations, (c) the present day computer simulation technique can deal with nun-linear equation systems to a satisfactory level, and (d) the results of simulations in 3D require analyses using good 3D visualizati on tools. We have treated some of the problems of astronomical magnetohydrodynamics w hich gives the basis for active phenomena like flares and jets that have be en revealed by radio and X-ray astronomy. We here discuss the astrophysical jet problem as an example.