Tag: astrogeology
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Ancient Australian Rocks May Redraw the Moon’s Birth Story
New Clues from Earth’s Oldest Rocks Researchers from the University of Western Australia (UWA) have turned to Earth’s oldest material, rocks buried deep in Western Australia, to rethink the moment that birthed the Moon. In a study focusing on 3.7-billion-year-old feldspar, scientists are piecing together clues about the cataclysmic events that shaped Earth’s celestial companion.…
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Polarization Parallels: Interstellar Comet 3I/ATLAS and Distant Solar System Comets
Overview Recent polarimetric measurements of the interstellar comet 3I/ATLAS, as reported by Z. Gray and colleagues, offer a surprising parallel with distant solar system comets. The analysis indicates that the microphysical properties of dust in the coma of 3I/ATLAS are not demonstrably different from those of far-flung comets within our own solar system. This finding…