有一种更小的星际碎片，是流星体。
An even smaller type of interplanetary debris is the meteoroid.
我们从流星体中得到流星和陨石。
那么讲到流星体从何而来，我们就需要讨论下彗星和小行星。
So to talk about where meteorites come from, we need to talk about comets and asteroids.
水手号宇宙飞船发现火星表面，还有它的两个卫星表面，都有由太空坠落的流星体造成的陨石坑。
The Mariner spacecraft found that the surface of Mars, as well as that of its two moons, is pitted with impact craters formed by meteoroids falling in from space.
太阳是一个巨大的旋转系统的中心，这个旋转系统由九大行星、它们的卫星和无数的小天体组成，包括小行星、彗星和流星体。
The Sun is the hub of a huge rotating system consisting of nine planets, their satellites, and numerous small bodies, including asteroids, comets, and meteoroids.
在1973年5月无人空间站到达轨道前不久，空气动力压力扯破了一个流星体和挡热板。 分析：首先，从逻辑上看，说：“空气动力压力扯破了一个流星体”，是不合事理的，荒谬可笑的。
Shortly before the uninhabited space station reached orbit in .May 1973,aeroaynamic pressure ripped off a meteoroid and heat shield.
研究人员将通过此次碰撞来研究月球土壤如何遭受辐射物质和微流星体的侵袭。
Researchers will be studying the soil on the moon via the hit to examine how the soil is eroded by radiation and micrometeoroids.
宇航服的外层能够防御太阳辐射和高速微流星体造成的伤害。微流星体是指太空中的微小尘粒。
The outer layers of space suit protect against harmful radiation from the Sun and bullet-fast particles of space dust called micrometeoroids.
类似于英仙座流星雨，猎户座流星雨以及其他流星雨，狮子座流星雨发生于地球在绕太阳公转过程中进入充满彗星碎片的流星体质点溪流之中。
Like other meteor showers, such as the Perseids and the Orionids, the Leonids happen when Earth plows through a trail of debris left in the wake of a comet orbiting the sun.
一份旨在限制未来这些碎片可能会对航空飞船造成的危险的报告在去年的四月份由宇航局发布，用来评估他们关于太空垃圾，名为MMOD（微流星体和太空碎片）的项目。
The report, Limiting future collision risk to spacecraft, was commissioned by Nasa last April to evaluate its programmes on 'space junk', officially known as MMOD (Micrometeoroids and Orbital Debris).
宇航服的外层能够防御太阳辐射和高速微流星体造成的伤害。微流星体是指太空中的微小尘粒。
L the outer layers of space suit protect against harmful radiation from the Sun and bullet-fast particles of space dust called micrometeoroids.
流星体活动在空间的固体天体，比小行星小，至少与尘埃一样大。
A solid body, moving in space, that is smaller than an asteroid and at least as large as a speck of dust.
当流星体进入大气层，它压缩的空气在前面的。
When a meteoroid enters the atmosphere, it compresses the air in front of it.
空间碎片和流星体环境由广义加权目标函数的公式来定义。
The space debris and meteoroid environment are defined followed by the formulation of the general weight objective function.
微流星体及空间碎片的高速撞击威胁着长寿命、大尺寸航天器的安全运行，导致其严重的损伤和灾难性的失效。
High velocity impact on long duration and large size spacecraft by meteoroid and space debris is a threat to its safety operation, that can in turn lead to significant damage and catastrophic failure.
如果一批流星体来自同一颗彗星，形成的就是流星雨。
If a batch of meteoroids comes from the same comet, the meteor shower is formed.
微流星体及空间碎片的超高速撞击威胁着长寿命、大尺寸航天器的安全运行，导致其严重的损伤和灾难性的失效。
Hypervelocity impact on long duration and large size spacecraft by meteoroid and space debris is a threat to its safety operation that can in turn lead to significant damage and catastrophic failure.
因此，MIPS使天文学家得以研究与地球轨道不交汇的彗星产生的流星体。
Consequently, MIPS allows astronomers to study the production of meteoroids by comets whose orbits do not cross the Earth's path.
流星体的尺寸范围从微小的尘粒到横切为数十公尺的物体。
Meteoroids range in size from tiny dust particles to objects tens of metres across.
所谓陨石，就是降落于地球表面的大流星体。
The so-called meteorite is a large meteoroid landed on the Earth's surface.
也许月球外层曾被流星体猛烈的撞击而加热到熔点。
Perhaps the outer part of the moon was heated to the melting point by intense meteoric bombardment.
流星体是小的石块或者石头和铁、其中有一些是小行星或者彗星的碎片。
Meteoroids are small chunks of stone or stone and iron, some of which are fragments of asteroids or comets.
宇宙充塞著沙粒大小的流星体。
Meteoroids are small particles in space with size similar to grains of sand.
这些被称为“流星体”的微粒，和在流星雨时落入地球大气的流星具有同样的大小。
Such particles, called meteoroids, are the same size as those that appear in meteor showers when they enter the Earth's atmosphere.
关于流星、流星体或由流星、流星体组成。
关于流星、流星体或由流星、流星体组成。
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