the branch of astronomy concerned with the physical and chemical properties of celestial bodies

天体の物理的および化学的性質に関する天文学の分野

pertaining to the branch of astronomy dealing with the origin and history and structure and dynamics of the universe

宇宙の起源、歴史、構造、ダイナミクスを扱う天文学の分野に関する

pertaining to the branch of astronomy dealing with the origin and history and structure and dynamics of the universe

宇宙の起源、歴史、構造、ダイナミクスを扱う天文学の分野に関する

an astronomer who studies the evolution and space-time relations of the universe

宇宙の進化と時空の関係を研究する天文学者

(cosmology) the theory that the universe originated sometime between 10 billion and 20 billion years ago from the cataclysmic explosion of a small volume of matter at extremely high density and temperature

(宇宙論) 宇宙が100億年から200億年前の間に、非常に高密度で高温の小さな物質の爆発的な膨張から始まったという理論

(cosmology) the theory that the solar system was formed by the gravitational accumulation of planetesimals

（宇宙論）太陽系が微惑星の重力的な蓄積によって形成されたという理論

(cosmology) the theory that the universe maintains a constant average density with matter created to fill the void left by galaxies that are receding from each other

（宇宙論）銀河が互いに後退して生じた空白を埋めるために物質が作られ、宇宙が一定の平均密度を保つという理論

(cosmology) the cosmic explosion that is hypothesized to have marked the origin of the universe

（宇宙論） 宇宙の起源となったと仮定されている宇宙爆発

(cosmology) a hypothetical one-dimensional subatomic particle having a concentration of energy and the dynamic properties of a flexible loop

（宇宙論）エネルギーの集中と柔軟なループの動的特性を持つ仮想的一次元亜原子粒子