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clean up & uniformity
=== Atmosphere ===
=== Atmosphere ===
Mars' atmosphere is quite thin and has an average pressure of 6.36 mb or 0.636% of that of earth. Its chief components are 95.32% [[carbon dioxide]], 2.7% [[nitrogen]], 1.6% [[argon]], 0.13% [[oxygen]], and 0.08% [[carbon monoxide]]. In addition it has trace amounts of [[water]] (210 ppm), [[nitrogen oxide]] (100 ppm), [[neon]] (2.5 ppm), hydrogen-deuterium oxide (HDO) (0.85 ppm), [[krypton]] (0.3 ppm), and [[xenon]] (0.08 ppm). Winds on Mars vary in speed from 2-7 m/s in summer to 5-10 m/s in fall, though the [[Project Viking]] landers have recorded winds varying from 17-30 m/s during dust storms that have swept past the landing sites.<ref name=marsfact/>
Mars' atmosphere is quite thin and has an average pressure of 6.36 mb or 0.636% of that of earth. Its chief components are 95.32% [[carbon dioxide]], 2.7% [[nitrogen]], 1.6% [[argon]], 0.13% [[oxygen]], and 0.08% [[carbon monoxide]]. In addition it has trace amounts of [[water]] (210 ppm), [[nitrogen oxide]] (100 ppm), [[neon]] (2.5 ppm), hydrogen-deuterium oxide (HDO) (0.85 ppm), [[krypton]] (0.3 ppm), and [[xenon]] (0.08 ppm). Winds on Mars vary in speed from 2–7 m/s in summer to 5–10 m/s in fall, though the [[Project Viking]] landers have recorded winds varying from 17–30 m/s during dust storms that have swept past the landing sites.<ref name=marsfact/>
Recent warming trends on Mars, including an apparent partial melt of the polar ice caps, have led at least one scientist to question the widely circulating theories of [[global warming]] on earth. Specifically, Habibullo Abdussamatov, head of space research at St. Petersburg's Pulkovo Astronomical Observatory in Russia, asserts that the sun, and not any activity specific to the earth, must be responsible for any warming observed on either planet.<ref name=ngs>Ravilious, Kate. "[http://news.nationalgeographic.com/news/2007/02/070228-mars-warming.html Mars Melt Hints at Solar, Not Human, Cause for Warming, Scientist Says]." ''National Geographic News'', National Geographic Society, February 28, 2007. Accessed May 27, 2008.</ref>
Recent warming trends on Mars, including an apparent partial melt of the polar ice caps, have led at least one scientist to question the widely circulating theories of [[global warming]] on earth. Specifically, Habibullo Abdussamatov, head of space research at St. Petersburg's Pulkovo Astronomical Observatory in Russia, asserts that the sun, and not any activity specific to the earth, must be responsible for any warming observed on either planet.<ref name=ngs>Ravilious, Kate. "[http://news.nationalgeographic.com/news/2007/02/070228-mars-warming.html Mars Melt Hints at Solar, Not Human, Cause for Warming, Scientist Says]." ''National Geographic News'', National Geographic Society, February 28, 2007. Accessed May 27, 2008.</ref>
=== Geology ===
=== Geology ===
[[Image:MarsTopoMap-PIA02031 modest.jpg|left|thumb|300px|Topographic map of Mars.]]
[[Image:MarsTopoMap-PIA02031 modest.jpg|left|thumb|300px|Topographic map of Mars.]]
There is a dichotomy on the surface of Mars; the northern hemisphere consists of low-lying volcanic plains, with the southern hemisphere consists of ancient, heavily-cratered highland plains. Mars also has two volcanic regions: Tharsis and Elysium. Within the Tharsis region is the largest volcano in the solar system, [[Olympus Mons]]. Olympus Mons is approximately 500 km across and is about the same size as the state of Arizona. Its peak is 24 km above the surrounding plains and it is surrounded by a vertical scarp 6 km high. A large canyon system, Valles Marineris, is located along the Martian equator east of the Tharsis region. Valles Marineris is 2-6km deep and 200-600km wide and approximately 4,500 km long (approximately the distance from San Francisco to Boston). The eastern part of Valles Marineris appears to have a tectonic origin, but the western part is characterized by features such as teardrop islands and longitudinal grooves, indicating it may have been formed by catastrophic flooding in the past. Such flooding may be possible under current climate conditions. Run-off channels in the cratered highland indicate a thicker atmosphere or warmer climate in the past that would have allowed water to be stable on the surface.
There is a dichotomy on the surface of Mars; the northern hemisphere consists of low-lying volcanic plains, with the southern hemisphere consists of ancient, heavily-cratered highland plains. Mars also has two volcanic regions: Tharsis and Elysium. Within the Tharsis region is the largest volcano in the solar system, [[Olympus Mons]]. Olympus Mons is approximately 500 km across and is about the same size as the state of Arizona. Its peak is 24 km above the surrounding plains and it is surrounded by a vertical scarp 6 km high. A large canyon system, Valles Marineris, is located along the Martian equator east of the Tharsis region. Valles Marineris is 2–6 km deep and 200–600 km wide and approximately 4,500 km long (approximately the distance from San Francisco to Boston). The eastern part of Valles Marineris appears to have a tectonic origin, but the western part is characterized by features such as teardrop islands and longitudinal grooves, indicating it may have been formed by catastrophic flooding in the past. Such flooding may be possible under current climate conditions. Run-off channels in the cratered highland indicate a thicker atmosphere or warmer climate in the past that would have allowed water to be stable on the surface.
Recent satellite imagery has shown that Mars has a 3 kilometre deep ice cap around its polar regions. The northern polar region is surrounded by [[dune]] fields. During the Martian winter, a layer of carbon dioxide condenses at the poles and sublimates in the summer, leaving the water-ice and dust polar caps exposed. The ratio of dust to water-ice contained in the polar caps remains unknown.
Recent satellite imagery has shown that Mars has a 3 kilometre deep ice cap around its polar regions. The northern polar region is surrounded by [[dune]] fields. During the Martian winter, a layer of carbon dioxide condenses at the poles and sublimates in the summer, leaving the water-ice and dust polar caps exposed. The ratio of dust to water-ice contained in the polar caps remains unknown.
More recently, NASA's latest mission, the [[Phoenix lander]], has discovered what appears to be water ice very near the surface near Mars' north pole. Furthermore, analysis of a cubic meter of soil at this site reveals that the soil is far more [[alkali]]ne than expected, and has tolerable levels of salt and low levels of [[calcium]]. Investigators have even suggested that the soil might support the growth of an Earth vegetable, like [[asparagus]].<ref name=courier>"[http://www.news.com.au/couriermail/story/0,23739,23932393-5013016,00.html Scientists find soil on Mars good enough to grow asparagus]." ''The Courier Mail'', June 28, 2008. Accessed June 30, 2008.</ref>
More recently, NASA's latest mission, the [[Phoenix lander]], has discovered what appears to be water ice very near the surface near Mars' north pole. Furthermore, analysis of a cubic meter of soil at this site reveals that the soil is far more [[alkali]]ne than expected, and has tolerable levels of salt and low levels of [[calcium]]. Investigators have even suggested that the soil might support the growth of an Earth vegetable, like [[asparagus]].<ref name=courier>"[http://www.news.com.au/couriermail/story/0,23739,23932393-5013016,00.html Scientists find soil on Mars good enough to grow asparagus]." ''The Courier Mail'', June 28, 2008. Accessed June 30, 2008.</ref>
On 28 September 2015 NASA held a press conference confirming that Mars indeed have briny, liquid water on its surface, leeching from the ground. While it had been theorized for some time, NASA has now confirmed it<ref>http://www.nytimes.com/2015/09/29/science/space/mars-life-liquid-water.html?_r=0</ref>.
On 28 September 2015 NASA held a press conference confirming that Mars indeed have briny, liquid water on its surface, leeching from the ground. While it had been theorized for some time, NASA has now confirmed it.<ref>http://www.nytimes.com/2015/09/29/science/space/mars-life-liquid-water.html?_r=0</ref>
== Life on Mars ==
== Life on Mars ==
* [http://www.answersingenesis.org/articles/arj/v1/n1/mars-testament-catastrophe Mars, a Testament to Catastrophe]
* [http://www.answersingenesis.org/articles/arj/v1/n1/mars-testament-catastrophe Mars, a Testament to Catastrophe]
* [http://www.youtube.com/watch?v=BnOhFXamYOc Catastrophic Model of Martian Geology I] Video
* [http://www.youtube.com/watch?v=BnOhFXamYOc Catastrophic Model of Martian Geology I] Video
* [http://www.youtube.com/watch?v=6HwZ22eYhAg Catastrophic Model of Martian Geology II]Video
* [http://www.youtube.com/watch?v=6HwZ22eYhAg Catastrophic Model of Martian Geology II] Video
*[http://genesismission.4t.com/Video/Mars1.html Catastrophic Model of Martian Geology] With Video
*[http://genesismission.4t.com/Video/Mars1.html Catastrophic Model of Martian Geology] With Video