小行星带简介 英文

小行星带简介 英文
小行星带简介 英文

小行星带简介 英文
Asteroid belt between the solar system between Mars and Jupiter orbit the asteroid-intensive areas,have been numbered 120,437 by the asteroids to get statistics,98.5 percent of asteroids have been found here.Since this is the most intensive areas asteroid,estimated to number as many as 500,000,this region is known as the main band,often referred to as the asteroid belt.About 2.17-3.64 AU from the sun,the space within the region,bringing together more than about 500,000 asteroids,the formation of the asteroid belt.So much can be condensed dense asteroid belt asteroid
In the asteroid belt,in addition to the sun's gravity outside Jupiter's gravity plays a larger role.Asteroid belt by the original group of stars in the solar nebula (the predecessor of the planet than the tiny planet) formation.However,because Jupiter's gravitational influence,hindering the formation of these stars planets,resulting in many stars collide,and form many of wreckage and debris.The three largest asteroid belt asteroids are Pallas,Juno and Vesta,an average of more than 400 km in diameter; in the main belt,only a dwarf planet - Ceres,about 950 km in diameter; the rest of the Asteroids are small,some as dust size.Asteroid belt material is very thin,while several spacecraft now has a good safety and not by accident.In the main belt of asteroids according to their spectra and the main form is divided into three categories:carbon,silicate and metal.In addition,collisions between asteroids with similar orbital characteristics may form and fineness of the asteroid family,these collisions produce the zodiacal light is the main source of dust .
中文意思：小行星带是太阳系内介于火星和木星轨道之间的小行星密集区域,由已经被编号的120,437颗小行星统计得到,98.5%的小行星都在此处被发现.由于这是小行星最密集的区域,估计为数多达50万颗,这个区域因此被称为主带,通常称为小行星带.距离太阳约2.17-3.64天文单位的空间区域内,聚集了大约50万颗以上的小行星,形成了小行星带.这么多小行星能够被凝聚 密集的小行星带
在小行星带中,除了太阳的万有引力以外,木星的万有引力起着更大的作用.　　小行星带由原始太阳星云中的一群星子（比行星微小的行星前身）形成.但是,因为木星的重力影响,阻碍了这些星子形成行星,造成许多星子相互碰撞,并形成许多残骸和碎片.小行星带内最大的三颗小行星分别是智神星、婚神星和灶神星,平均直径都超过400 公里；在主带中仅有一颗矮行星—谷神星,直径约为950公里；其余的小行星都较小,有些甚至只有尘埃大小.小行星带的物质非常稀薄,目前已经有好几艘太空船安全通过而未曾发生意外.在主带内的小行星依照它们的光谱和主要形式分成三类：碳质、硅酸盐和金属.另外,小行星之间的碰撞可能形成拥有相似轨道特征和成色的小行星族,这些碰撞也是产生黄道光的尘土的主要来源...

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