a region beyond Neptune in the solar system containing icy objects like dwarf planets, asteroids, and comets
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柯伊伯带
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a highly energetic celestial object emitting powerful radiation from the center of a galaxy, often associated with a supermassive black hole
![类星体](https://api.langeek.co/v1/assets/flags/zh.png)
类星体
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a distant, hypothetical region surrounding the solar system, thought to harbor icy bodies and comets
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奥尔特云
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the outer layer of the Sun's atmosphere, observable as a plasma halo during a solar eclipse
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恒星日冕
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the apparent path that the Sun traces in the sky over the course of a year, which is also the plane of the Earth's orbit around the Sun
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黄道
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the apparent displacement or difference in the apparent position of an object when viewed along two different lines of sight, often used in astronomy to measure the distance of nearby stars
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视差
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a highly magnetized, rotating neutron star that emits beams of electromagnetic radiation from its magnetic poles
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脉冲星
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a unit of measurement equal to the average distance between the Earth and the Sun, approximately 149.6 million kilometers
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天文单位
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a high-energy particle, mainly originating from outside the Solar System, that travels through space at nearly the speed of light
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宇宙射线
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(cosmology) the faint glow of radiation spreading through the universe, believed to be residual radiation from the Big Bang
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宇宙背景辐射
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(cosmology) a theory proposing that the solar system formed from a rotating nebula of gas and dust about 4.6 billion years ago
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星云假说
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(cosmology) a measure of the rate at which the universe is expanding, determined from the observation of distant galaxies' recession velocities
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宇宙膨胀率
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the matter and radiation that exists in the space between stars within a galaxy
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星际介质
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very small particles originally derived from stars, serving as raw material for forming planets, and existing between galaxies, stars, and other celestial bodies
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宇宙尘埃
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a small celestial body that becomes visible as a meteor upon entrance into the atmosphere of the earth
![流星体](https://api.langeek.co/v1/assets/flags/zh.png)
流星体
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(astronomy) a set of three fundamental principles describing the motion of planets around the Sun, formulated by Johannes Kepler
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开普勒定律
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a disruption in earth's magnetic field caused by solar activity, resulting in variations that can impact electronic systems and communications on earth
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磁暴
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the colored lights, mainly green and red, in the sky seen primarily near the southern magnetic pole
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南半球的极光
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the colored lights, mainly green and red, in the sky seen primarily near the northern magnetic pole
![北极光](https://api.langeek.co/v1/assets/flags/zh.png)
北极光
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associated with the phenomena, processes, or theories related to the origin and formation of the universe or celestial bodies
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与宇宙的起源有关
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relating to or resembling a nebula, which is a cloud of gas and dust in outer space
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星云状的
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