aaaaa kreh - 1 Kresil Joy P. Jimenez Prof. Zola Gonzales...

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Kresil Joy P. Jimenez Prof. Zola Gonzales English 2- G5 March 14, 2008 The Case for Mars: The Plan to Settle the Red Planet and Why You Must. “The known is finite, the unknown infinite; intellectually we stand on an islet in the midst of an illimitable ocean of inexplicability. Our business in every generation is to reclaim a little more land, to add something to the extent and solidity of our promise.” This is what Thomas Henry stated on the reception of the “Origin of Species” (1887). Mars is the fourth planet from the center of the solar system, orbiting the Sun once every 687 (Earth) days to a mean distance of 141 million miles. Called the “Red planet” for its distinct orange-red color. Mars has been the object of intense interest for over a century. Popularly regarded as a possible source of life. (Deauna and Zablan 2001). Mars has long captured the imaginations of scientist, engineers, and explorers. However, conventional approaches to mounting human expeditions to the fourth planet from the sun have presented formidable engineering and fiscal challenges that have created the presumption that the human exploration of Mars is a goal for future generations, if achievable at all. The human exploration of Mars has been historically placed as an objective to be considered only by the grandchildren of today’s generation of planetary exploration enthusiasts. Since your first close-up picture of Mars in 1965, spacecraft voyages to the red planet have revealed a world strangely familiar, yet different enough to challenge our perceptions of what makes a planet works. Every time you feel close to understanding 1
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Mars, new discoveries send you straight back to the drawing board to revise existing theories. Many would think that Mars would be easier to understand. Like Earth, Mars has polar ice caps and clouds in its atmosphere, seasonal weather patterns, volcanoes, canyons, and other recognizable features. However, conditions on Mars vary wildly from what we know on our planet. Over the past three decades, spacecraft have shown us that Mars is rocky, cold and sterile beneath its hazy and pink sky. We have discovered that today’s Martian wasteland hints at a formerly volatile world where volcanoes once raged, meteors plowed deep craters, and flash floods rushed over the la. And Mars continues to throw out new enticements with each landing or orbital pass made by our spacecraft. Among many discoveries about Mars, one stands out above all others: the possible presence of liquid water on Mars, either in its ancient past or preserved in the subsurface today. Water is key because almost everywhere we find water on Earth, we find lie. If Mars once had liquid water, or still does today, its compelling to ask whether any microscopic life forms could have developed on its surface. Is there any evidence of life in the planet’s past? If so, could any of these tiny living creatures still exist today? Imagine
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This note was uploaded on 09/09/2011 for the course ECON 102 taught by Professor Smith during the Spring '11 term at Uni. Ulster.

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aaaaa kreh - 1 Kresil Joy P. Jimenez Prof. Zola Gonzales...

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