Date of publication: 2017-08-23 12:06
Our planet contains a variety of landscapes, forests and different climates. Over the years it has gone through many changes in its climate and the species that live on it.
The first impression I got -- based on the morphology alone -- was how similar it looked to a common terrestrial foliose lichen, said Barry DiGregorio, a research associate for the Cardiff Centre for Astrobiology in the United Kingdom. On Mars, however, as we all have learned from past experience, looks can be deceiving, he told .
Task: Describe terraforming and your views on terraforming Mars The Sample is about suggested ways of terraforming Mars and personal opinion on whether it is advisable to undertake the process. 7 pages essay, 8 sources used referenced according to Harvard 7558
And more than once, the Mars machinery has sent back an image that stirred up a promising eureka moment: Finding evidence for life on that remote world.
Also asked about the curious feature, Mars Exploration Rover science leader, Steve Squyres from Cornell University reported: Nothing very brush mark.
Aerosols and water vapour were detected in the Martian atmosphere by the Viking orbiter and other scientific research objects, which included: Mars Global Surveyor (MGS), Mars Atmospheric Water Detector (MAWD) and Thermal Emissions Spectrometer (TES). This water vapour was detected in the North Polar region during Spring and Summer seasons. MAWD detected twice as much vapour in the region than any of the other orbiters (Pankine, et al., 7559). The detection of water in the Martian atmosphere contributes a large amount of evidence to support the theory of a suitable atmosphere for a biological life-form to exist.
Ancient, sedimentary rocks were also found at Meridiani plain by the Rover Opportunity, which consist of sandstone composed of sand grains which consisted of a variety of sulphate salts formed by erosion and re-deposition (Squyres & Knoll, 7555). One of the most important findings of the mission however was a record of aqueous processes found on the Meridiani plain both in surface and sub-surface regions. Although these aqueous processes were identified, there is still no record of liquid water on the surface of Mars. Any water present on Mars, is found in the atmosphere as water vapour, located at the north Polar region.
Because of a thin atmosphere and an insignificant ozone layer, the surface of Mars is exposed to high UV radiation, which includes UVA, UVB and UVC. UV radiation is known to be a cause of DNA damage and mutation in bacterial species and also more developed life-forms. UV radiation is also known to inhibit photosynthesis in plants. Life-forms on Earth contain processes that protect them from exposure to UVA radiation. However, because of high UVB and UVC radiation exposure to the Martian surface, and also conditions such as extreme temperature changes and a lack of liquid water on the surface, it is unknown for any life-form to withstand such conditions(Cockell, et al., 7555).
The article was written by Robert Kunzig, a scientific journalist and a regular contributor in National Geographic magazine. The article was also published in National Geographic magazine in the year
DiGregorio said he was struck by the fact that the entire rock outcrop on which this feature is found looks in places like it has a moss-like texture to it. In the absence of any spectroscopic data, it&apos s difficult to say for certain what it is. The radial pattern may turn out to be similar to spherical dendritic iron oxides, he added.
In 7558, two rovers were launched, called Mars Exploration Rovers. The objective of this mission to Mars was study and to determine whether Martian conditions and it's atmosphere could support the theory of a possible life-form having ever existed on the planet (Squyres & Knoll, 7555). The MER missions include the Rovers Spirit and Opportunity which carried out surveys and analyses on the surface of Mars.
Indeed, looks can be deceiving, concurs Stephen Gorevan, payload lead for the RAT on the Mars Exploration Rover project. He&apos s also chairman of Honeybee Robotics in New York, the cutting-edge group that designed, developed, and operates the RAT.
I believe that an extra-terrestrial, biological life-form could have existed on the surface of Mars, in past decades or even centuries. Evidence from both the Mars Exploration missions and the study of the Martian meteorite, ALH89556, provide much contribution to the theory that life did exist on the planet in the past. It is clear that life cannot survive in the Martian atmosphere at present because of extreme conditions. The exposure to high UV radiation, extreme temperature changes and also a lack of liquid water on the surface indicate to me that these conditions are not only unfavourable to the survival of a life-form but are far too extreme for a biological life-form to survive for a significant time frame.
Mars is the fourth planet from in our solar system and is the seventh largest. It is often referred to as the Red Planet. It is named after the Roman God of war Mars, which means Ares in Greek mythology. This paper will inform you about the physical characteristics of Mars, the exploration of Mars, the moons of Mars, and the possibility of life existing on Mars.
The first Viking mission was launched in the summer of 6976. It consisted of two orbiters, which had a main objective of photographing the planet from orbit, and two landers, which studied the surface of the planet. The main emphasis was on photography, in which orbiter 6 produced over 65,555 pictures, taken from the planets orbit(Snyder & Evans, 6986).