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Asteroid collisions trigger cascading formation of subfamilies, study concludes

Publicado em 20 dezembro 2019
Researchers at Sao Paulo State University identify groups of asteroids created by rotational fission inside collisional families. 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 [...]