Probing the solar system’s prenatal historyScience 8 August 2014This is an overview and intro
Probing the solar system’s prenatal historyScience 8 August 2014This is an overview and intro to Maria Lugaro et al, “Stellar origin of the 182Hf cosmochronometer and the presolar history of solar system matter” in Science 8 August 2014: Vol. 345 no. 6197 pp. 650-653 [not open access] The Sun’s age (T0) is inferred from the most accurate estimate for condensation of the solar system’s first solids, which occurred 4567.3 ± 0.16 million years ago (Ma). The epoch before the birth of the Sun reflects progressive isolation of the matter precursor to the solar system from the chemically evolving galaxy. This process leads to the formation of the giant molecular cloud from which a dense fragment collapsed to form the Sun and planets. The current architecture of the inner solar system was largely established within 100 million years of solar system formation. IMAGE CREDIT: (SUPERNOVA) THINKSTOCK; (AGB STAR) THINKSTOCK; (SOLAR SYSTEM) DAVID SZABO/THINKSTOCK -- source link
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