Ad-Astra: a bibliometric analysis of Lunar and Mars explorations

The frontier of space exploration is a magic, which has long fascinated mankind since the introduction of ancient knowledge. Human is always curious to know why they are here, and what are waiting for them beyond Earth. The research in space exploration is growing from the small community towards more global collaboration. Moreover, successful spin-off programs from space technology can bring sustainable competitive advantage and well-being. It is promising that humanity can live on Earth planet peacefully along with the advancement in outer space knowledge and innovation. Therefore, the research in space exploration is crucial for all mankind. This paper offers a bibliometric analysis of Lunar and Mars explorations between 2016-2019, to clarify the body of knowledge in these research areas. The connection between Lunar and Mars explorations is explained to guide a global collaboration into the same direction. Consequently, the research community still needs to promote more scientific activities in these two areas. The United States as the leading country with a strong tie to Germany, France, and Italy, should create more collaboration with Russia, China, and other small countries. According to keyword analysis, both Lunar and Mars explorations have the same main four research topics in Lunar/Mars surface analysis, spaceflight and astronauts, space vehicular engines, and space orbit with international space stations. These research topics also support the future establishment of Moon base and Mars habitat. However, spaceplane launching facilities still require more international diplomatic discussion to fulfill the missions. Thus, this paper aims to contribute to every country towards the preparation of Lunar and Mars explorations in the near future.