Varying cosmic-ray flux may explain cycles of biodiversity

• Autores: Bertram M. Schwarzschild
• Localización: Physics today, ISSN 0031-9228, Vol. 60, Nº. 10, 2007, pág. 18
• Idioma: inglés
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• Resumen

  • The solar systemoscillates through the Milky Way's midplane with a period of about 60 million years. That cyclic excursion might be causing periodic fivefold increases in Earth's exposure to extragalactic cosmic rays.