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Dust

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grains-predate

Meteorites found in ancient dust from exploding stars

#Cosmoread: Microscopic dust grains extracted from meteorites that have landed on Earth and explosive ancient origins, scientists had found.

The dust grains – they’re bigger than the sun, the earth also known as presolar grains – stars that likely formed before the Earth’s solar system hundreds of millions of years were blown out by the Community Were. A new analysis of data collected from these small particles, the researchers type of stellar explosion that dust, 5 billion years ago, have come closer to pinpointing production.

Stardust to trace the origin of the subatomic “fingerprints,” the scientists that they may produce explosive conditions to test computer models to simulate the original dust grains’ point to an explosion white dwarf star in a double star system that may have been made.

Ancient Grains

Study co-author of the study by Christopher Wrede, age and origin of these presolar grains puzzling out for decades dedicated to the analysis says.

One element that is different variations of the number of neutrons – Wrede, assistant professor of physics at Michigan State University, an email that researchers grain ‘in view isotope told Live Science. About the isotope silicon-30, which has been linked to a certain type of stellar explosion held a great deal more than a dozen grain called a classical nova.

Classical Novas – a stellar explosion that may result in a binary, or paired star system – are separated from the supernova, Wrede said, they are a type of explosion that can occur over and over again. A couple small star, a white dwarf steals fuel from its big neighbor, has its own heating and surface blasting dust and gas into space at the end.

“After a classical nova, and siphon fuel from the white dwarf companion may continue to re-ignite,” Wrede said. “In a supernova, the star explodes, it may be only once.”

Going Nuclear

When the Earth’s solar system was formed, heated and mixed collisions produce dust and gas blocks them so that they cook evenly shared many of the same isotope. Silicon is -30, which is rare on Earth, such as – – grain stands out with unusual isotope, Wrede explained. “This tells us that they have been produced before the formation of the solar system,” about 5 billion years ago, dating back, Wrede said.

According to Wrede, the high quantity of silicon -30 compared to other silicon isotopes suggested that they originated in a classical nova, but he and his colleagues still unsure how much they could expect to see Silicon -30 were relative to other isotopes, a classical nova were responsible. Their experiments produced a nuclear reaction that affect the amount of silicon -30, and -30 will help determine the amount of silicon dust grains have a match revealed a new route.