A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity. [1][2] The word is derived from the Greek galaxias (γαλαξίας), literally …

2024年10月22日 · Galaxies consist of stars, planets, and vast clouds of gas and dust, all bound together by gravity. The largest contain trillions of stars and can be more than a million light …

4 天之前 · galaxy, any of the systems of stars and interstellar matter that make up the universe. Many such assemblages are so enormous that they contain hundreds of billions of stars. …

2024年7月1日 · Una galaxia es “una enorme colección de gas, polvo y miles de millones de estrellas, todas unidas por la gravedad”, define la NASA. Estas estructuras varían en formas y …

Una galaxia es una estructura astronómica que agrupa conjuntos de estrellas (en sus respectivos sistemas solares) y materia interestelar como gases, campos de asteroides, etc., en un mismo …

2025年3月17日 · Una galaxia es un conjunto de gases, polvo y miles de millones de estrellas y sus sistemas solares. La galaxia se mantiene unida gracias a la fuerza de gravedad. Nuestra …

2025年3月17日 · What Is a Galaxy? The Short Answer: A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems, all held together by gravity. We live on a planet …

2019年1月4日 · Galaxies are composed of stars, dust and dark matter, all held together by gravity. Astronomers aren't certain exactly how galaxies formed. After the Big Bang, space …

Galaxia may refer to: The superior form of Gaia (Foundation universe), a planet in Isaac Asimov's Foundation Series; Galaxia, a genus in the iris family "Galaxia", a 1996 trance song by Ferry …

2019年4月17日 · Galaxies are sprawling systems of dust, gas, dark matter, and anywhere from a million to a trillion stars that are held together by gravity. Nearly all large galaxies are thought …