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Scientific American

2022-10-05, 18:27
The Milky Way's Spiral Arms May Have Carved Earth's Continents

A controversial new theory suggests the Milky Way galaxy’s arms sent comets hurtling toward early Earth, where impacts built new continental crust



https://www.scientificamerican.com/artic...ontinents/
www.chinaphonearena.com > Off The Wall > Tech & Science > [Sci-Am] The Milky Way's Spiral Arms May Have Carved Earth's Continents