An Integrated Approach of Multi-Criteria Decision Making to Determine the Most Habitable Planet

Gizem Gunaydin,Gamze Duvan,Eren Ozceylan

doi:10.28991/hij-2022-03-02-04

Abstract

Every planet in the universe has its own characteristics. These features make the planets different among themselves. For this reason, all the different properties of the planets must be evaluated at the same time when determining habitable planets. This situation requires a multi-criteria decision making (MCDM) approach. In this study, a list of habitable planets (nine planets and the Moon) has been considered. Seventeen different criteria such as mass, gravity, diameter, density, escape velocity, rotation time, day of length, distance from the sun, perihelion, aphelion, orbital period, orbital velocity, orbital inclination, orbital eccentricity, obliquity to orbit, mean temperature, and number of satellites are taken into account. The weights of criteria are determined with DEMATEL (The Decision Making Trial and Evaluation Laboratory) by analyzing the interactions among criteria. Orbital inclination is the criterion with the highest weight, and the criterion with the lowest weight is the number of satellites. After weighting the criteria with DEMATEL, VIKOR (VIseKriterijumska Optimizacija I Kompromisno Resenje) and TOPSIS (Technique for Order Preference to Similarity to Ideal Solution) approaches are used to rank the planets. According to the TOPSIS, Earth is ranked first, Venus ranked second and Mercury ranked third in the order of the most habitable planets. According to the VIKOR method, Earth is ranked first, Mars is ranked second, and Mercury is ranked third in the order of the most habitable planets. Finally, the same calculations are considered with equal weights and the results are discussed. Doi: 10.28991/HIJ-2022-03-02-04 Full Text: PDF

Highlights

There are many planets in the solar system
The TOPSIS and VIKOR methods were applied by taking the criterion weights
According to the TOPSIS method, Earth is in the first place, Venus is in the second, and Mercury is in the third place

Summary

Introduction

There are many planets in the solar system. Earth is currently known as the only planet with life, people have sought different habitats for many years. Whether there is life on the moon and other planets has always been a matter of wonder. Certain criteria that Earth has for the existence of life are important. Many criteria, such as a planet's mass, gravity, distance from the sun, and period speed, are criteria that affect life. These criteria that every planet has are unique. The multi criteria decision making (MCDM) methods should be used to analyse the planets in terms of habitability according to these criteria

Methods

Results

Conclusion