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Will a time come, when our Earth shall no longer be able to sustain its rapidly growing population? Perhaps this is one of the questions many of those who care about the worrying trends in climate changes and populations would ask themselves. As far as I am concerned, I believe that Earth will come to an end and all life on the Earth’s surface will subsequently become extinct. Since the oceans will eventually evaporate, Earth’s future is ultimately in jeopardy. However, there is much we have yet to learn, as a species, about our planet, counting it out as doomed seems naive and irrational. In the article After Earth: Why, Where, How, and When We Might Leave Our Home Planet, the author Ben Austen agrees that Earth might become uninhabitable someday and asserts that humans will live beyond the earth eventually. After offering different scenarios of expanding to space, Austen (2011) asserts that the ultimate goal of humans “isn’t about survival, it’s about thriving.” Austen’s insights about expanding beyond the earth in the space seem unrealistic at the moment, but his ideas strengthen my initial belief that humans will become extinct when the Earth comes to an end.
People might find the notion of living beyond the Earth probable, Austen’s finding reveals that humans have not and may never find any inhabitable planet for humans to live. Austen introduces the failure of humans thus far in locating a planet with all the conditions for human occupation. For instance, the moon is identified as the primary target for the presence of life-sustaining ice and its close distance, and the NADA has been studying possible methods of extracting useful resources from the lunar surface and avoiding its fatal high-energy cosmic radiation (Austen, 2011). However, no promising progress has been made yet to deal with such problems as well as other constraints of the moon for human occupation such as the temperature difference and the lack of gravity and air. Austen’s explanations serve an alternative purpose, but it strengthens my belief that the Earth will come to an end one day because humans are not able to locate an inhabitable planet with all the condition required for human existence.
Austen introduces an alternative route of building an orbital habitat in the space, but the project of completing such huge task and migrating people there seems unrealistic and unpractical. First of all, the first task is to escape the Earth’s gravity. Austen explains most of the fuel burned for the space shuttle is to overcome the pull of gravity (Austen, 2011). Engineers have been investigating the possibility of building a “space elevator” that could successful escape the Earth’s gravity for decades, but no concrete results have shown even when billions of dollars have been invested into the research. Then, some NASA scientists suggest the possible of innovative approaches such as “wormhole teleportation” and “faster-than-light warp drive,” but those suggestions are still at the theoretical phase (Austen, 2011). Additionally, Mark Hopkins from the National Space Society suggests that humans might have to be re-engineered into “sexless and bodiless” machines to inhabit in space, but that challenges the very existence of humanity (Austen, 2011). Given the analysis mentioned above, migration to space seems to be an unrealistic idea.
Austen’s idea about the inadequate progress of humans reminds the hard truth that migrating to space might never happen. On the one hand, Austen introduces how NASA is risk-averse and directionless in the research with the lack of profit motive (Austen, 2011). Humans haven’t felt the urgency of speeding up their research before it is too late when they are still obsessed with financial rewards. On the other hand, NASA Langley’s Chief Scientist Dennis Bushnell reveals the fact that humans are not fully aware of the possible effects of cosmic radiation and zero gravity on humans (Austen, 2011). The research is still at the starting point when abundant further researches and time are needed. Although some researchers, engineers, and astronomers believe that humans will eventually live in space, there are too many uncontrollable factors and too many overwhelming tasks ahead pending to be solved. At the moment, there is no way to anticipate the time needed before humans are ready to migrate to space.
As far as I am concerned, the earth is the only inhabitable planet for humans and the only way to survive. If the world comes to an end someday, humans will go extinct. Austen’s article supports my idea as the assumption of migrating to another plant or building an orbital habitat seems unrealistic at the moment. And it stays a mystery when it will become possible due to the inadequate researches at the moment. I believe the only solution for human survival is to solve the depletion of natural resources and the deterioration of environment by seeking development in a sustainable way. Austen’s arguments and observations reinforce my perspective that our destiny is not beyond Earth, but here.