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a region beyond Neptune in the solar system containing icy objects like dwarf planets, asteroids, and comets
カイパーベルト, カイパーリング
a highly energetic celestial object emitting powerful radiation from the center of a galaxy, often associated with a supermassive black hole
クエーサー, 準恒星状天体
a distant, hypothetical region surrounding the solar system, thought to harbor icy bodies and comets
オールトの雲, オールト雲
the outer layer of the Sun's atmosphere, observable as a plasma halo during a solar eclipse
コロナ, 太陽の外層大気
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
黄道
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
視差, 見かけの変位
a highly magnetized, rotating neutron star that emits beams of electromagnetic radiation from its magnetic poles
パルサー, 回転する中性子星
a unit of measurement equal to the average distance between the Earth and the Sun, approximately 149.6 million kilometers
天文単位, AU
a unit of astronomical distance equivalent to about 3.26 light-years
パーセク, 約3.26光年に相当する天文単位
a high-energy particle, mainly originating from outside the Solar System, that travels through space at nearly the speed of light
宇宙線, 宇宙粒子
(cosmology) the faint glow of radiation spreading through the universe, believed to be residual radiation from the Big Bang
宇宙マイクロ波背景放射, ビッグバンの残光
(cosmology) a theory proposing that the solar system formed from a rotating nebula of gas and dust about 4.6 billion years ago
星雲説, 星雲仮説
(cosmology) a measure of the rate at which the universe is expanding, determined from the observation of distant galaxies' recession velocities
ハッブル定数, ハッブルパラメータ
the matter and radiation that exists in the space between stars within a galaxy
星間媒質, 星間物質
the space surrounding the Sun dominated by solar wind
太陽圏, 太陽風が支配する空間
very small particles originally derived from stars, serving as raw material for forming planets, and existing between galaxies, stars, and other celestial bodies
宇宙塵, 星間塵
a small celestial body that becomes visible as a meteor upon entrance into the atmosphere of the earth
流星物質, 小さな天体
(cosmology) the rapid expansion of the universe following the Big Bang
インフレーション, 急速な膨張
a disruption in earth's magnetic field caused by solar activity, resulting in variations that can impact electronic systems and communications on earth
磁気嵐, 地磁気嵐
the colored lights, mainly green and red, in the sky seen primarily near the southern magnetic pole
南極光, オーロラオーストラリス
the colored lights, mainly green and red, in the sky seen primarily near the northern magnetic pole
オーロラ, 北極光
associated with the phenomena, processes, or theories related to the origin and formation of the universe or celestial bodies
宇宙生成論の, 宇宙または天体の起源と形成に関連する現象、プロセス、または理論に関連する
study of celestial objects outside the Milky Way galaxy
銀河系外天文学, 天の川銀河の外にある天体の研究
relating to or resembling a nebula, which is a cloud of gas and dust in outer space
星雲の, 星雲に関連する
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