Argument: Manned space flight is a technological dead end

Manned space flight appears to have little practical use. While its supporters talk about traveling to other planets, the technology simply does not exist, nor may ever exist, to send humans to worlds that could be even potentially habitable. It may be possible to send humans to Mars, or the moons of Jupiter and Saturn, but doing so would have little value other than for the sake of planting boots on alien soil. [1] Any research worth conducting on planets within the solar system can be done just as well by robots, at considerably less expense. The laws of physics seem to show that it is impossible for ships to travel at or past the speed of light, meaning any journey to planets beyond the solar system would take centuries at least. It is unlikely, for this reason, that manned space travel will ever be a practically useful endeavor. Research should be put into technology that can actually lead humanity somewhere. There is nowhere for humans to go in space that robots cannot, and nowhere worth the cost of their going.

[1] Leath, Audrey. “Should Mars Be Human Space Flight Objective?”. American Institute of Physics 2003.

Candidate 1: "Certainly there are many concerns on Earth that must be addressed if mankind hopes to survive. Pollution and climate change are real threats that deserve a great deal of attention from all governments around the world, since everyone is affected. This attention, however, does not need to exclude from the agenda the development and propagation of manned space flight. Rather, states can focus on more than one science-based issue at a time. It is rather disingenuous, in fact, to suggest that it is a matter of one or the other. Furthermore, the international unity created by manned space exploration, binding people not as members of separate nations, but as members of the human race, can serve as a means of promoting unified action on issues affecting the whole planet. Space exploration can thus actually help to ameliorate coordination problems between states in their efforts to deal with global issues. Clearly, when people think of themselves as citizens of the world they are more ready to think globally and consider issues affecting other countries. Space exploration is very real means of promoting such thinking."
Candidate 2: "Curiosity and the will to explore certainly is a fundamental part of the human condition. But the human body has natural limitations that technology cannot overcome. While artifice can go a long way to making places suitable for the frail human form, it can only go so far. Manned space flight is extremely expensive, costing the US government, the primary investor in space technologies tens of billions of dollars every year, yet there remains no clear plan for humans to return to the moon, let alone Mars and the rest of the solar system. [1] Exploration beyond the solar system remains a pipe dream. The laws of physics likewise seem to make the possibility of human exploration beyond the solar system nigh impossible. Other stars are simply too far away for a human to reach. The reality simply is that manned space flight is too costly and will likely never find application beyond Sol.

[1] Kaku, Michio. “The Cost of Space Exploration”, Forbes, 2009."
Candidate 3: "Humans are more liability than asset when it comes to space travel. While humans can think outside the box more readily than machines, developments in cognitive science and computer design have resulted in ever more competent computers that are gaining more and more the ability to solve problems on their own. Furthermore, humans are physically fragile; in the event of even slight damage to a spacecraft, all humans on board could be killed. They are also susceptible to health risks in the form of radiation damage and muscle and bone loss due to the zero gravity conditions of space. [1] Unmanned ships are far more capable of surviving the dangers of space, and of completing missions successfully.

[1] Ad Hoc Committee on the Solar System Radiation Environment. "Space Radiation Hazards and the Vision of Space Exploration." National Research Council."
Candidate 4: "While the technology is still in its infancy there is still much lending itself to the value of interstellar travel. The Earth cannot sustain life forever, and the risk of a catastrophic event such as a giant asteroid impact is always real. [1] Developing technology that can sustain humans aboard spacecraft for several generations as well terra-form potential new homes are of the utmost importance to lasting human survival. Many things in the realm of science fiction today can be made reality given the will and resources. It is essential that humanity dedicate itself to the cause of manned space exploration, for the sake of its will to explore, as well as its will to survive.

[1] Gerakines, Perry. “What is the Chance of an Asteroid Hitting Earth and How Do Astronomers Calculate It?”. Scientific American. 2005."
Candidate 5: "The probability of any cosmic collision or other destructive event is extremely low and not worth thinking about. In any event, manned space flight would not be viable for the purpose of saving humanity from a dying Earth for many years, if ever. Governments and people should focus their attention on developing this planet, rather than worrying too much about finding new ones to inhabit."
Candidate 6: "While unmanned space exploration is not as romantic as manned space flight, it is more functional. Exploring space is extremely expensive and governments have to consider the practicalities of exploration more than the glamour. Scientifically, little is gained by manned flight over unmanned flight. In terms of increasing interest in space flight, it is questionable whether states encouraging interest in space exploration is the best thing at all. They could simply use space exploration, especially exciting manned voyages, as means of distracting public attention from domestic problems. It is better for people to be focused on life on this planet than on the mysteries of space."
Candidate 7: "The paradigm of exploration is essential to the progression of technology. Space is the last great frontier and represents the perfect object on which to construct and maintain this paradigm. The costs of manned space flight are great, but the core human drive to explore can only be satisfied by supporting it. Furthermore, the spin-off benefits of space exploration are numerous. Computers have become more compact and more powerful due to research conducted under the aegis of space exploration. Even things as ubiquitous and central to everyday life as Velcro, Teflon, and ballpoint pens find their origin in space exploration. [1] The dream of exploration should not be killed for the sake of saving money.

[1] Coalition for Space Exploration. “Benefits of Space”. 2010."

While the technology is still in its infancy there is still much lending itself to the value of interstellar travel. The Earth cannot sustain life forever, and the risk of a catastrophic event such as a giant asteroid impact is always real. [1] Developing technology that can sustain humans aboard spacecraft for several generations as well terra-form potential new homes are of the utmost importance to lasting human survival. Many things in the realm of science fiction today can be made reality given the will and resources. It is essential that humanity dedicate itself to the cause of manned space exploration, for the sake of its will to explore, as well as its will to survive.

[1] Gerakines, Perry. “What is the Chance of an Asteroid Hitting Earth and How Do Astronomers Calculate It?”. Scientific American. 2005.
