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A brief discussion on geological catastrophes and spiral arms |
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| Authors: | Weijia Zhang Xiaodong Zou Hangjie Yu Yang Lei Daniel Conelly |
| Abstract: | According to Density wave theory,catastrophes can berelated to spiralarmsingalaxy.Eachtime solar system entered into the spiralarms corresponds to impactevents,respectively.The spiralarms would impose an influence on Earth and the solarsystem. |
| Keywords: | density-wavetheory impactevent geologicalcatastrophe |
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