  With the development of technological progress, mining on asteroids is
becoming a reality. This paper focuses on how to distribute asteroid mineral
resources in a reasonable way to ensure global equity. To distribute asteroid
resources fairly, 7 primary indicators and 20 secondary indicators are
introduced to build a mathematical model to evaluate global equity and the
weights are given by Analytic Hierarchy Process (AHP). Then Global Equity
Score(GES) Model based on 12 primary indicators and 40 secondary indicators is
built and TOPSIS method is applied to rank all countries. A t-distribution
probability density function is applied to simulate the rate of asteroid
mining. The Backward Algorithm is applied to quantitatively measure the impact
of changing indicators on global equity. Then Pearson correlation coefficient
analysis is conducted for each indicator, and t-test is performed lastly. The
results demonstrate that asteroid mining promotes global equity that poor
countries can be allocated slightly more mineral resources, and a schedule of
the implementation of each measure is given. To gain more insight, sensitivity
analysis is conducted and the results demonstrate that scores vary less than
7%. It can be concluded that our GES model have great potential as its
robustness, accuracy and strengths.
