Scientists have found that the interstellar medium of dust, after collecting more than 1,000 pounds. the snow fall in the area of Germany and Also train Station in the Antarctic.(Credit: Alfred Wegener Institute)
Cosmic dust found in Antarctic snow is likely to have been born in a far-off supernova, millions of years ago. The dust is interstellar travel, eventually brought the material down to Earth, where scientists have discovered the ancient grains.
This fabric was out, as it contains an iron isotope called iron-60, that is, in general, is to be released by a supernova, but it is very rare on Earth. (Isotopes are versions of elements that differ in number of neutrons in their atoms.)
In the quest to find the elusive space dust, scientists have analyzed more than 1100 kg. (500 kg) surface area of snow that is generated from a high-altitude region of Antarctica in the vicinity of the German Kohnen Station. At that location, the snow should be mostly free of contamination by terrestrial dust, the researchers reported in a new study.
The researchers then sent the still-frozen snow, to a lab in Munich, where it was melted down and purified, to isolate the particles that can contain traces of materials from the area. When the researchers examined the burning substance with an accelerator mass spectrometer, they discovered the rare, the iron-60 isotope, a remnant of an ancient supernova.
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The room was dusty, with a rich, particles generated by supernova explosions and the moment of planets, asteroids, and comets. Our solar system is currently passing through a cloud of dust, a space that is well-known as the Local Interstellar Cloud (LIC), and the granules are of such a cloud on Earth, you can find a lot of, to reveal how our sun and its planets, the interaction with the cosmic dust.
In order to find out if the space dust came from a distant supernova, the scientists were the first to close, or it is produced within our own solar system. Irradiated dust shed by the planets and other bodies that can hold the iron up to 60, but the exposure to cosmic radiation, creating a different isotope: a manganese-53. The researchers compared the ratio of iron-60, and manganese-53 in the Southern cereal, may think that the amount of manganese was much lower than it would be if the substance were local.
How did the scientists know that the iron-60 in the Winter snow does not come from the Earth? There’s iron-60 in our planet during its early stages, but all of the rare isotope, has long been lost to the world, the researchers wrote in the study. Nuclear-bomb testing may have to be made and distributed iron-60 is on the other side of the planet, but the calculations show that the amount of the isotope being produced by such tests, it would be a lot less than the total amount of the iron-60 was found in Antarctica’s snow.
Iron-60 is produced in nuclear reactors; provided, however, that the amount of the isotope to that of the reactor to generate, is “unimportant”, and is not limited to the reactors where it was created, the scientists said. To date, even in severe nuclear accidents such as the Fukushima Daiichi nuclear power plant disaster in 2011, it does not introduce iron-60 in the environment, in quantifiable amounts, according to the study.
Rather, the iron-60 on Earth, it is only to be found in ancient deep-sea deposits, or bedrock that has been created in the space, such as meteorites or on the moon,” the scientists reported online Aug. 12 in the journal Physical Review Letters.
“Because of the exclusion of terrestrial and cosmogenic sources [produced by cosmic radiation], we conclude that we have detected, for the first time, over the iron 60 in the interstellar origin, in the Antarctic,” the researchers wrote.
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Originally published on Live Science.