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Dawn spacecraft successfully entered orbit around the around Ceres - VIDEO PDF Print E-mail
Tuesday, 10 March 2015 03:00

Research spacecraft Dawn, coming into orbit around Ceres, has reached another milestone in his mission for the study of outer space. According to information provided by the American space agency NASA, the unit went into a circular orbit on Friday, March 6th, 2015 at 12:39 hours Zulu and is currently in orbit at an altitude of about 61 thoUSAnd kilometers from the surface of the dwarf planet. This event makes the Dawn spacecraft first in the history of the unit, will be near the dwarf planet and the first unit, which was able to visit in orbit around two celestial bodies.

Signal confirming output apparatus Dawn into orbit of Ceres was received by receivers Deep Space Network NASA Deep Space Network at 13:36 GMT. This is due to the fact that Ceres and the unit is on a remote Dawn 3.33 astronomical units (498 million kilometers) from Earth, and the radio signal takes about 55 minutes to cover this distance twice.

What made it possible to perform complex missions apparatus Dawn - is its ion engine, which for generating traction uses electrical energy rather than energy-burning fuel. From the engine nozzle breaks the flow of electrically charged xenon ions accelerated to high speed, so that the ion engine at least 10 times more effective than any other jet engine. The only drawback is the small ion engine thrust generated value that is approximately equal to the weight of a single sheet of paper. But the ion engine can operate continuously for many months and even years, slowly and gradually disperse during this time the spacecraft to extremely high speeds.
 
The result of the small value of traction motors are suitable apparatus Dawn to Ceres was long and leisurely, and the process resembles the process of alloy trunks felled trees on the river with a very slow flow. This process required a very precise execution, because any of the errors could lead to the fact that the machine Dawn had to spend a very slow and long-course correction and back, producing a retry entering the desired orbit.

We remind our readers that the space research unit Dawn was launched into space 27 September 2007. After the flyby of Mars 4 February 2009 and dispersed by the forces of its gravity, the machine Dawn approached and 16 June 2011 took into orbit around Vesta called planetesimals. There the machine is 14 months, with a variety of research and shooting, and then again turned on its ion engines and took a flight to Ceres, which lasted three and a half years.

Representatives from NASA reported that the machine Dawn will be in orbit of Ceres very long time. Over the next few months, the unit will gradually approach the surface of the dwarf planet, making more and more detailed images of the surface, finding out the nature of the origin of the bright spots, studying the geological structure and looking for other signs of any geological activity.


НАЖМИТЕ ЗДЕСЬ ДЛЯ ПРОСМОТРА ВСЕГО СПИСКА НОВОСТЕЙ О НЕОБЫЧНЫХ ЯВЛЕНИЯХ>>>

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