How Was the Sun Born?
A new research published in the journal Science says that scientists are pretty close to understanding how the sun was born as the research traced origins of heavy radioactive isotopes.
Dr. Maria Lugaro and Professor Alexander Heger from Monash University are leading the team that made use of radioactivity to estimate the last time that heavy elements like gold, lead, silver, platinum and other rare elements of the Earth were added to the matter of solar system by the stars that produced them.
After the addition of last of the heavy elements, matter of solar system went into an 'incubation' period in which the stellar nursery was formed and the sun was born then along with many other stars.
"We now know this incubation period could not have lasted more than 30 million years. This offers us the chance to determine the lifespan of the nursery where the sun was born, how massive it was and how many stars were born there together", Dr. Lugaro said.
The team says they can conclude with confidence that the rare elements that constitute your phone are the final one percent of the elements of lead and other rare ones which were added later, about 30 million years before the sun was born, said Dr. Lugaro.
Dr. Lugaro said that the research team will now look at other heavy radioactive nuclei in order to get a better understanding of the pre-historic solar system and also predict its timing in an accurate and precise manner.
Dr. Lugaro also said that getting an understanding of the timescales and processes which led to the formation of the solar system is the key to relate its birth environment to the planetary systems of the galaxy.
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