The eye tracker technology is one of the marvelous technologies which have made the world of the disabled people to be open up in particular those having impairment in speech and movement. The view's precise gaze point is distinguished at the computer screen through the tracking of movements of the eye and this allows for environmental control and communication using several interface tools array. The eye's movement is used in the communication by people using the Eyegaze System. The individual's communication is thus no longer inhibited. The funding of life science and research and technology for NASA has resulted to these and many other benefits (Griffin). Another argument against space exploration is the dangers that manned space travel portends. There are many perils which can affect a launch of the space craft and this includes poor weather, explosive fuel, human errors, malfunctioning equipment and even birds. The meteoroids, floating debris and electromagnetic radiation can affect the spacecraft once in flight. There are also dangers during the re-entering of the atmosphere of the earth as was evident in the Columbia disaster. There should be a perfect earth re-entry path because it is otherwise i.e. It will bounce off the atmosphere if it is too shallow and it will burn up if it is too steep. The other dangers can be attribute to the space junk which refers to the fallen off debris from the satellites, rockets, space stations and space shuttles. They can consist of specks of screws, paints, bolts, antennas, nonworking satellites, equipment and tools that is lost or discarded. There numerous of hazards which are present both on earth and in space. In space for instance, more than 4000 missions have been launched to space (Nugent 47). The international space station and the spacecraft are constantly being bombarded by the micrometeorites. Great damage can be caused by them because of the great speed at which they travel. They usually burn up on entering the atmosphere. The hazards of the space junk on earth are due to the debris which doesn't totally burn up after entering the atmosphere. A lot of damage can be caused to property and life when it enters highly populated areas. A large area can be contaminated by the decommissioned space stations or some satellites re-entering the atmosphere that...

Some of those parts which don't burn up fall into the ocean and the cleanup process or the recovery are less costly.
Conclusion

The contribution of NASA to the advancement of technology to the normal life on Earth is quite clear and it is similar to any other program which is funded by the government. Most people relegate NASA into an elitist status of bureaucrats with starry-eyed scientists driving it aiming at taking money away from better ways of utilizing It here on earth. The research gains of the program, since the Apollo days is seen to arise from a ripple effect phenomenon whereby advancement is built upon advancement and technology rising out of technology. The costs can then be justified when one considers the many important products which have arisen from the research on space exploration which is impacting positively every aspect of our lives from the medical, to environment, to security to safety. Furthermore the direct economic value of the program is sufficient to make it self sufficient it the return on investment was made directly to the program instead of going to the U.S. Treasury. Therefore the space exploration is a not just important but a necessity so as to make us develop technologies which will even be useful to face future problems.

Works Cited

Dobbs, Locke. " Revisiting the final frontier." Caribbean Business 32.18 (2004): 24-24.

Dubner, Stephen J. Is Space Exploration Worth the Cost? A Freakonomics Quorum 11 Jan.

2008. 18 Apr. 2010.

Griffin, Michael. Why Explore Space? 21 May. 2007. 18 Apr. 2010.

Pop, Virgiliu. Is Space Exploration Worth the Cost? 19 Jan. 2004. 18 Apr. 2010.

Nakaya, A. National Aeronautics and Space Administration. "Space Exploration Will Play an Important Role in America's Future." Opposing Viewpoints: America in the Twenty-First Century. Detroit: Greenhaven Press, 2006.

"NASA Spinoffs" Bringing Space down to Earth, The Ultimate Space Place. 15 June. 2007. 18

Apr. 2010.

Nugent, B. "To [Explore] Infinity and Beyond." Mercury 35.2 (2006): 47-47.

Shaw, Steven. Why we Need To Explore Space. 27 Feb. 2010. 18 Apr. 2010.