Astronomical context of Solar System formation from molybdenum isotopes in meteorite inclusions

Title	Astronomical context of Solar System formation from molybdenum isotopes in meteorite inclusions
Authors	Gregory A. Brennecka, Christoph Burkhardt, Gerrit Budde, Thomas S. Kruijer, Francis Nimmo and Thorsten Kleine
Magazine	Science
Date	11/12/2020
DOI	10.1126/science.aaz8482
Introduction	Calcium-aluminium–rich inclusions (CAIs) found in meteorites represent the earliest solids to solidify within the Solar System, thereby marking the precise timing of its inception. This connection bridges astronomical observations of star development with cosmochemical investigations into Solar System origins. Analysis indicates that the unique molybdenum isotopic compositions of CAIs encompass nearly the full spectrum of material present in the protoplanetary disc. It is posited that CAIs originated during the Sun's evolution from its protostellar stage to the pre–main sequence (T Tauri) phase of stellar development, thus framing Solar System formation within a celestial perspective. The findings suggest that the majority of the material comprising the Sun and Solar System accumulated during the CAI-formation period, a span of under 200,000 years.
Quote	Gregory A. Brennecka, Christoph Burkhardt and Gerrit Budde et al. Astronomical context of Solar System formation from molybdenum isotopes in meteorite inclusions. Science. 2020. Vol. 370(6518):837-840. DOI: 10.1126/science.aaz8482
Element	Molybdenum (Mo) , Calcium (Ca) , Aluminum (Al)
Industry	Space , Research & Laboratory