But there were other 35 missions (2 / 3 of which failed) and the lander Phoenix is \u200b\u200bthe sixth spacecraft to land on red planet (actually pleasant nine times it has been touched the Martian soil, but for 3 times the data obtained have been few before the failure of the mission)!
So why all this enthusiasm?
Because for the first time a robot arm will look for any traces of arctic soil microbes and water. The main mission objectives are twofold: the study of the history of water on Mars, as supposed by geologists, and the search for evidence of a place "inhabited", in line with the probable presence of water in the past.
(AGI) - Pasadena (California), May 25 08 - The picture shows the planet's northern polar plains where you can clearly see the stony ground, with details of the features polygonal fractures, own land on Mars and on Earth, are located in regions with permafrost. In fact, just considering the characteristics of the ground, mission managers are confident that, under the hood of the surface, you can find the frost.
The lander should carry out surveys for a period of 90 days in a flat area. The probe will be the first to penetrate the permafrost to search for traces of life in the soil and ice, collecting samples with its robotic arm for further analysis, for the first time, on the spot. The lander is also a powerful booster for the optical signals for future missions.
Permafrost
It 's a phenomenon that consists in the constant freezing of the soil and indicates, therefore, this term, an area where the soil is permanently frozen. Conventionally, this term indicates a frozen soil by at least 2 years, but this is purely a definition arbitrary. Make up an estimated 20% of the land on the planet, 25% in the northern hemisphere, and reaches depths of 1,500 meters in northern Siberia.
The mission also uses technology developed in Italy. The probe has two sensors "star attitude" developed by the Florentine Galileo Avionica. With a star chart stored in the software, if it were to lose its orientation, will be the same sensor to automatically search for the new position and to provide information to the onboard computer to bring it back on the right course.
Card missions
The rover (literal translation tramp) is a man-made vehicle designed to carry on a celestial body. The rover is brought to the planet or satellite from the lander. The soft landing deve'essere so as not to damage the rover
A lander is a type of spacecraft that carry out the descent and stop on the surface of a celestial body. Unlike the lander, the rover that they carry, may also move on the surface of Mars
It 's the fourth planet of the solar system in order of distance from the Sun Some of its orbital parameters, such as the inclination of the axis of rotation and the length of the day, making it quite similar to Earth, unlike the latter However, Mars has a very thin, lower average surface temperatures (between -140 ° and 20 ° C) and very small size (its diameter is only half that of the Earth). It 'always been indicated as the most' likely candidate to accept life on its surface, 'cause its environmental conditions are those which' are similar to those on Earth, of all the planets of the Solar System
Sun
Planets: Mercury · · Venus Earth Mars · · · · Saturn Jupiter Uranus Neptune ·
dwarf planets: Ceres · Pluto Eris ·
note 1: A dwarf planet or pianezio is a kind of celestial body orbiting planet around a star is characterized by a mass sufficient to give it a spherical shape, but that has not been able to "clean up" its orbital slot of other objects of comparable size
Note 2: Eris (official name Eris 136199) is the largest dwarf planet system Solar currently known. Eris (the personification of discord according to Greek mythology) was formerly known by the provisional designation 2003 UB313, or the informal name of Xena, the warrior princess in honor of a famous American TV series.
UPDATE 01/08/2008
here we are ...
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