释义 |
Definition of meteoroid in English: meteoroidnoun ˈmiːtɪərɔɪdˈmidiəˌrɔɪd Astronomy A small body moving in the solar system that would become a meteor if it entered the earth's atmosphere. 〔天文〕流星体 Example sentencesExamples - Whether a meteoroid makes it to Earth's surface or not depends on many factors including the mass, initial velocity, angle of entry, composition, and shape of the body.
- Once the meteoroids enter the Earth's atmosphere, they are known as meteors and become visible due to the friction caused by air molecules slamming against the surface of the high-velocity particle.
- However, from time to time, comets suddenly get brighter, and one possible explanation for this is that the comet has struck a small meteoroid in space; perhaps a small lump of rock, 10 cm or a metre in size.
- The term ‘space debris’ in its largest sense includes all naturally occurring remains of solar and planetary processes: interplanetary dust, meteoroids, asteroids, and comets.
- It is probably natural to think of meteorites - as the meteoroids that fall to Earth are called - as threatening, even dangerous, phenomena.
Definition of meteoroid in US English: meteoroidnounˈmēdēəˌroidˈmidiəˌrɔɪd Astronomy A small body moving in the solar system that would become a meteor if it entered the earth's atmosphere. 〔天文〕流星体 Example sentencesExamples - However, from time to time, comets suddenly get brighter, and one possible explanation for this is that the comet has struck a small meteoroid in space; perhaps a small lump of rock, 10 cm or a metre in size.
- Once the meteoroids enter the Earth's atmosphere, they are known as meteors and become visible due to the friction caused by air molecules slamming against the surface of the high-velocity particle.
- The term ‘space debris’ in its largest sense includes all naturally occurring remains of solar and planetary processes: interplanetary dust, meteoroids, asteroids, and comets.
- It is probably natural to think of meteorites - as the meteoroids that fall to Earth are called - as threatening, even dangerous, phenomena.
- Whether a meteoroid makes it to Earth's surface or not depends on many factors including the mass, initial velocity, angle of entry, composition, and shape of the body.
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