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cloud comets
Exemple pentru "cloud comets"
Dynamical studies of hypothetical Oort cloud comets have estimated that their occurrence in the outer-planet region would be several times higher than in the inner-planet region.
對奧爾特雲彗星的動力學研究發現，外行星範圍的彗星出現次數比內行星範圍高出幾倍。
Their results imply that "a substantial fraction of the Oort cloud comets, perhaps exceeding 90%, are from the protoplanetary discs of other stars."
這意味著，奧爾特雲彗星中很大的一部份（甚至超過90%）都來自於其他恒星的原行星盤。
When Matese and Whitmire analyzed the orbits of these Oort Cloud comets, about 20% of them seemed to come not from the random directions you'd expect, but from a narrower section of sky.
马泰赛和惠特迈尔分析了来自奥尔特星云的彗星轨道后，发现其中20%的彗星不是像你以为的来自于随机方向，而是来自于天空的某个狭窄区域。
When the Sun's orbit takes it outside the galactic disc, the influence of the galactic tide is weaker; as it re-enters the galactic disc, as it does every 20-25 million years, it comes under the influence of the far stronger "disc tides", which, according to mathematical models, increase the flux of Oort cloud comets into the Solar System by a factor of 4, leading to a massive increase in the likelihood of a devastating impact.
当太阳轨道把它带出银道面，银河潮汐的影响就弱一些，当它每隔2千万到2千5百万年进入银河盘，它就会受到远为强烈的"盘潮汐"的影响，根据数学模型，奥尔特彗星的流量会增大4倍，导致毁灭性的撞击的可能性大大增加。
Alte rezultate
They found that the Oort cloud could not account for all short-period comets, particularly as short-period comets are clustered near the plane of the Solar System, whereas Oort-cloud comets tend to arrive from any point in the sky.
他們發現歐特雲不能解釋所有的短週期彗星，特別是聚集在黃道平面附近的短週期彗星，而來自歐特雲的彗星傾向於來自天空中的任意一點。
This shield protected the probe as it entered the dust cloud produced by the comet's interaction with the Sun.
这个防护盾可以在进入彗星与太阳相互 作用产生的尘埃云时起到保护作用。
This emission may arise in molecular clouds, comets, planetary atmospheres, stellar atmospheres, or various other conditions in interstellar space.
這種發射可能出現在分子雲、彗星、恆星大氣或其它各種條件的星際空間中。
Neither Kirkpatrick nor Wright think Nemesis is disrupting the Oort cloud and sending comets towards Earth, however.
然而，不论是克里克帕特里克还是赖特，他们都不认为"复仇者"正在扰乱欧特云团并将彗星抛向地球。
This is allegedly a spherical cloud of comets extending as far as three lightyears from the sun.
他提出围绕太阳有一个球形的彗星云，一直延伸到离太阳3光年的地方。
One amateur astronomer reported seeing a structureless bright cloud around the comet, and an estimated 2 magnitude increase in brightness after the impact.
一名业余天文学家报告发现彗星周围的无结构亮云，估计在撞击後增加了2星等。
The spectra of comets consist of a reflected solar spectrum from the dusty clouds surrounding the comet, as well as emission lines from gaseous atoms and molecules excited to fluorescence by sunlight and/or chemical reactions.
彗星的光譜包括包圍著彗星的塵埃反射的陽光，以及氣體的原子和分子被陽光激發和/或化學反應發出的螢光。
The steam forms a cloud around the comet that can stretch out for 80,000 km! That's the length of almost eight Earths in a row!
水蒸气会在彗星周围形成一个云团，其跨度会达到80000千米，相当于八个地球排成一列的长度！
Nebula in deep space Interstellar cloud in deep space Comet in space Earthlike planet in deep space Space nebula Nebulae in outer space Wonders of space Abstract space nebula Deep space Related categories
外层空间星云 外层空间星云 与行星的外层空间星云 外层空间星云 外层空间星云 外层空间 与星的外层空间星云 外层空间星云 外层空间星云
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