• Keisuke SugiuraEmail author
Part of the Springer Theses book series (Springer Theses)


Our planetary system is formed through collisions between bodies with various sizes, that is, micrometer-sized dust particles, km-sized planetesimals, and 1,000 km-sized protoplanets. Bodies grow through collisional coalescence of bodies, and they eventually become the planets in the present solar system. Thus, the collision is one of the most important processes for the formation of the solar system. The present solar system has not only the planets but also smaller asteroids. Since asteroids do not experience significant melting thanks to those small sizes, we can obtain information about the past environment of the solar system from asteroids. Especially, shapes of asteroids tell us what kind of collisions they experienced in the past solar system because shapes of asteroids are mainly altered by collisions between asteroids and resultant shapes depend on impact conditions. In this chapter, we introduce the overview of the solar system, the properties of asteroids, the standard solar system formation scenario, and the collisional phenomena between rocky minor bodies as basic knowledge to extract information of the past solar system from asteroids’ shapes.


Solar system Asteroids Solar system formation scenario Collisions between rocky bodies 


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© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Earth-Life Science InstituteTokyo Institute of TechnologyMeguroJapan

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