ログイン
a region beyond Neptune in the solar system containing icy objects like dwarf planets, asteroids, and comets
カイパーベルト
a highly energetic celestial object emitting powerful radiation from the center of a galaxy, often associated with a supermassive black hole
クェーサー
a distant, hypothetical region surrounding the solar system, thought to harbor icy bodies and comets
オールトの雲
the outer layer of the Sun's atmosphere, observable as a plasma halo during a solar eclipse
コロナ
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
a highly magnetized, rotating neutron star that emits beams of electromagnetic radiation from its magnetic poles
パルサー
a unit of measurement equal to the average distance between the Earth and the Sun, approximately 149.6 million kilometers
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
(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
(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
the matter and radiation that exists in the space between stars within a galaxy
星間物質
very small particles originally derived from stars, serving as raw material for forming planets, and existing between galaxies, stars, and other celestial bodies
宇宙の塵
a small celestial body that becomes visible as a meteor upon entrance into the atmosphere of the earth
隕石
(astronomy) a set of three fundamental principles describing the motion of planets around the Sun, formulated by Johannes Kepler
ケプラーの法則
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
the colored lights, mainly green and red, in the sky seen primarily near the southern magnetic pole
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
associated with the phenomena, processes, or theories related to the origin and formation of the universe or celestial bodies
コスモゴニック
relating to or resembling a nebula, which is a cloud of gas and dust in outer space
星雲の
relating to the stars or constellations, especially in terms of their positions relative to Earth
恒星の
