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Phys.Org (Reino Unido)
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Asteroid collisions trigger cascading formation of subfamilies, study concludes

Publicado em 19 dezembro 2019
Billions of years ago, asteroid collisions resulted in the ejection of fragments hundreds of kilometers across and sharing similar orbits. The resulting groups are known as asteroid families. Other asteroid groups formed as a result of rotational fission, which happens when a rapidly spinning body reaches critical rotation speed and splits into relatively small fragments only a few kilometers across. Scientists have always thought about fission clusters as entirely distinct from collisional [...]