Science, Space and Technology News 2024
Researchers discovered a significant magnesium anomaly in a meteorite’s dust particle, challenging current astrophysical models and suggesting new insights into hydrogen-burning supernovas. Credit: SciTechDaily.com, scientists have identified a rare dust particle lodged within an ancient extraterrestrial meteorite, shedding new light on the origins of stars beyond our solar system.Led by Dr. Nicole Nevill of the Universities Space Research Association at LPI, during her Ph.D.
Atom probe analysis of a particle formed by a hydrogen burning supernova. This three dimensional ‘atom map’ shows two types of magnesium isotopes detected within the sample, with silicon and oxygen atoms within the particle displayed as smaller spheres. This work relies on the ability of the atom probe to count individual isotope.s of magnesium so that the isotopic ratio can be measured.
This extreme magnesium anomaly can currently only be explained by a recently discovered type of star — a hydrogen-burning supernova. As the first known detailed chemical study of a presolar grain from a hydrogen-burning supernova, the results unlocked new insights into hydrogen-burning supernovas and their evolutionary conditions.
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