Recently, what factors should be considered when governments and individuals decide to start space explorations has become a problem. From my perspective, people should start space explorations: the most important factors are the costs of space explorations and internal international responsibilities for different countries as global citizens. Mr. Roberts brings an invalid point in terms of the proportion of the costs in “using taxpayers’ money to fund space traveling.” (Source H), arguing that funding space explorations create unnecessary costs, and, thus, tax burdens on citizens. However, this is not the case. According to the Tax Foundation (Source C), it only costs “less than 0.06 pennies” of everyone penny of each federal dollar spent on various programs, which means the cost of space explorations is only a tiny part of the cost distributions of federal dollars. Since the “all others” part contains many other distributions such as administration of justice, international affairs, and energy, the sole costs of space explorations to citizens themselves are trivialized. In addition, since paying taxes is the fundamental duty every citizen has to practice, it is unreasonable and useless to question how governments would use the federal income. This is because the governmental policy won’t be changed if citizens have complaints about it; Instead, suggesting a better way to spend federal income through legal institutions may be a more effective way. The reason Mr. Collins views many countries, to a smaller extent, “the political leaders”, as irresponsible, is that they only consider “national interests” rather than “global interests” when they are making decisions (Source G). This is true due to the ongoing polarization of political ideology and radicalizations of nationalism indeed narrow down the global corporations and pursuit of commonwealth among countries. However, starting space travel would accelerate international interactions and collaborations (Source A) since many countries have common goals——having space in space explorations and constructing better lives for global citizens. Compared to ongoing global conflicts on the Earth, which are inevitable due to limited resources, people could live together in the space, solving problems and improve their lives since there will be no boundaries living in the space.