Description: 流星體是指小行星或彗星的碎片，大小范圍從幾毫米到數十米不等。無論該天體是否有大氣層，流星體都可以以極高的速度向任何天體墜落。如果天體有大氣層，流星體會因與大氣分子碰撞而減速。我們在地球大氣層中觀測的流星體就是流星。如果流星體未在大氣中完全燒毀（或者如果天體沒有大氣層），它會落到該天體的表面，此時稱之為隕石。

Related Terms:

• 隕石
• 流星

Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

This is an automated transliteration of the simplified Chinese translation of this term

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