作者: D.E. Brownlee
DOI: 10.1016/B978-0-08-095975-7.00128-5
关键词: Exocomet 、 Astronomy 、 Comet 、 Asteroid belt 、 Asteroid 、 Interstellar comet 、 Astrobiology 、 Formation and evolution of the Solar System 、 Physics 、 Solar System 、 Planet
摘要: Comets are surviving members of a formerly vast distribution solid bodies that formed in the cold regions solar nebula. Cometary escaped incorporation into planets and ejection from system most have been stored two distant reservoirs, Oort cloud Kuiper belt, for age system. The past decade has seen great advances understanding comets, but they still remain somewhat mysterious enigmatic fringes distinction between comets asteroids become clouded with discovery active asteroid belt finding contain ‘common meteoritic solids.’