Space flight safe factorTo operate one space flight exploration organization, it needs to concern human safe flight factor. I shall indicate it needs to have these three stages to further develop its space exploration to continue to improve its safe space flight for every time of space flight.Human future space flight missions will include these three stages to continue journey into space. The first stage is short term, NASA's return to flight after the Columbia accident. The second stage is mid term. What is needed to continue flying the shuttle fleet until a replacement means for human access to space and for other shuttle capabilities is available, and the third stage is long term, future directions for the kinds in space. Therefore, the space exploration organization can arrange the three stages to carry out any future space exploration activities. I believe it can improve every time of space flight more safe because it can ensure its space rocket engineering can be improved to raise safe level to let space people to catch to leave our Earth.However, any human future space flight, which must be enhanced safety of flight when carry on any experimenting space flight exploration missions. Because NASA's safety performance is a very important factor to influence any space people confidence to catch every sky rocket to leave our Earth to do any space exploration activities. So, eliminating and catching rocket risks will be any beginning and end than during the middle of any space flight exploration journeys.Space people's life is the most important assets of any space exploration journeys. Because of the dangers of ascent and re-entry, because of unknown space environment and because we are still relative new comers, operation of shuttle and indeed all human space flight must be viewed as a development activity.Thus, any every time space flight exploration missions will need to encourage to invent new space transportation engines ( machine) or fuel, e.g. nuclear fuel to reduce the any space exploration journey accident risks and achieves to spend the fastest time to arrive any new space exploration destination. Thus, I believe any new space exploration flight will improve the space transportation technology and invent more new fuel and new space rocket manufacturing materials for future human any unknown space exploration flight demand. The three stages of improving space transportation include as below: The beginning stage, for example, the space shuttle is as somehow comparable to civil or military air transport. They are not comparable; the inherent risks of spaceflight are serious higher. The recognition of human spaceflight as a developmental activity requires a shift in focus from operations and meeting schedules to a concern for the risks involves. Thus, the space transportation tools will be improved to protect space passengers safety: the improving the ability to tolerate it, repairing the damage on a timely basis, reducing unforeseen events from the loss of crew and vehicle, exploring all options for survival, such as provisions for crew escape systems and safe havens, barring unwarranted departures from design standards and adjusting standards only under the most safety-driven process.