A lot of money is being spent by NASA on its missions. It has been space-exploration programs cost multibillion-dollars. This is the reason that a group of an informal engineers have been working on a plan to carry out such missions in a cost -effective manner.

It has been found that the alternative plan has been termed as `Stairway to Mars'. Though researchers have been working on the concept, but they have affirmed that Mars mission in 2030s have better chances to turn out as a reality in comparison to NASA's plans.

Experts associated with the alternative plan were of the view that NASA requires development of heavy rockets. These rockets will go to other planets or will carry out research on asteroids.

For all these activities, a huge sum is required, affirmed Wayne Hale, Former manager of the space shuttle program. He continued by affirming that there is no doubt that these missions can be carried out.

But he wants to know that from where the money will come. This is the reason that he has been advocating that some new measures should be tried out.

Bruce Pittman, Chairman of Commercial Space Group of at the American Institute of Aeronautics and Astronautics has affirmed that the new alternative can prove beneficial.