In spite of its thick ice cap of the Antarctic is technically a desert.
The studies on the Antarctic snow, and the researchers have, for the first time, interstellar dust, which recently fell to the Earth, a new study finds.
These findings may shed light on the mysterious interstellar clouds in the solar system is flying through a regular, said the researchers. Tons of extraterrestrial dust created by the passing of a comet, asteroid collisions and exploding stars, fall to Earth every day. However, scientists are not able to find it and for a long time after the product has been dropped, and a lack of data about the solar system and recent interactions with the outside world.
By contrast, this new study analyzes the relatively new inter-stellar dust, and the findings may reveal insights into the mysterious interstellar clouds and their relation to the solar system.
“Scientists might be able to use our results to find out how the solar panel area, along the lines of,” the study’s lead author Dominik Knoll, an experimental nuclear physicist at the Australian National University in Canberra, told Space.com. “We know about the distant galaxies and stars, and a lot about our own solar system, but in the immediate vicinity of our solar system and is, therefore, more research is needed.”
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In order to look at the potential of pristine specimens of interstellar dust, the scientists collected about 1,100 pounds. (500 kg) of Antarctic snow, which was less than a 20-year-old. It was collected as well as a couple of hundred miles off the coast of the frozen continent, is in the area of Germany and Also the Station.
For the purpose of identifying the snows of the components, the researchers have brought it to Munich, melted it, filtered out the solids, incinerate the residue, and the analysis of the pattern of the light. They found that the presence of two of the rare radioactive isotope iron-60, and manganese-53. (Isotopes of an element differ in number of neutrons that they contain, in their nuclei; thus, for example, is the most naturally abundant iron isotope, iron-56 and 30 neutrons, while iron-60 to 34 neutrons.)
According to the authors, the most likely source of the iron-60 is a supernova, a powerful explosion of a massive dying star that is bright enough to briefly outshine all the other stars in the galaxy. Natural methods of of of iron-60 production to only one-tenth as much. However, the iron-60, and manganese-53, can also be produced when the atom-fragments, the so-called cosmic rays, strike interplanetary dust. However, the researchers found a higher ratio of iron-60-manganese-53 than they would have expected from this mechanism.
The researchers also examined whether iron-60 was as a fall-out from nuclear weapons or power plants. However, they found that the production of iron-60, and manganese-53, these springs have to be ignored.
Thus, the scientists concluded that the radioactive isotopes were the most likely to be formed in a nearby supernova that was going to be the seed of the interstellar clouds of gas and dust. In the study, the researchers say, when the solar system passes through such clouds of dust raining down on the surface of the earth.
Future research on interstellar dust in the older ice and snow can shed light on the origins and structure of the nearby interstellar clouds, and in the history of their interactions with the solar system, the researchers said.
The scientists detailed their findings online Aug. 12 in the journal Physical Review Letters.
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The original article Space.com.