A nebula (Latin for 'cloud, fog'; [1] pl. nebulae or nebulas) [2][3][4][5] is a distinct luminescent part of interstellar medium, which can consist of ionized, neutral, or molecular hydrogen and also cosmic dust. Nebulae are often star-forming regions, …

2025年3月17日 · What Is a Nebula? The Short Answer: A nebula is a giant cloud of dust and gas in space. Some nebulae (more than one nebula) come from the gas and dust thrown out by the explosion of a dying star, such as a supernova. Other nebulae are regions where new stars are beginning to form. Watch this video to learn all about nebulae!

星雲 （英语:Nebula，源自 拉丁语 的nebulae，意为“雲” [1]）是 宇宙塵 、 氫 氣、 氦 氣和其他 等離子體 聚集的 星際雲。 原本是天文學上通用的名詞，泛指任何 天文上的 擴散 天體，包括在 銀河系 之外的 星系 [註 1]。 星雲通常也是孕育並形成恒星的區域，例如 鷹星雲，這個星雲刻畫出 NASA 最著名的影像，即 創生之柱。 在這個區域形成的氣體、塵埃和其他材料擠在一起，聚集了巨大的質量，這吸引了更多的質量，最後大到足以形成 恆星。 剩餘的材料還可以形成 行星 和 …

2024年6月17日 · Nebula is Latin for "mist, vapor, fog, smoke, exhalation," but in an astronomical context, it refers to any celestial object that appears cloud-like when viewed through a telescope.

2023年6月11日 · Nebulas — colorful clouds of expanding gas and dust — have long captivated stargazers with their beauty. Here are 25 of the most stunning nebulas in the universe.

星云（源自 拉丁文 的：nebulae或nebul&aelig，与ligature或nebulas，意思是云或雾）是尘埃、氢气、氦气和其他 电离气体 聚集的 星际云。 原本是天文学上通用的名词，泛指任何天文上的扩散天体，包括在 银河系 之外的 星系 （一些过去的用法依然留存着，例如 仙女座星系 依然使用 爱德温·哈勃 发现它是星系之前的名称，被称为 仙女座星云）。 星云通常也是恒星形成的区域，例如 鹰星云。 这个星云刻画出 NASA 最著名的影像： 创生之柱。 在这个区域形成的气体、尘埃和 其 …

2024年10月23日 · From Earth, some nebulae are visible with the naked eye, while others are only seen with the help of powerful telescopes. What Is a Nebula? A nebula is a giant cloud of gas …

Scattered throughout the cosmos are celestial clouds of dust and gas known as nebulae, the grand cosmic nurseries where stars are born and die. These intricate structures harbor a rich array of physical phenomena, making them a fundamental area of research in astronomy.

nebula, any of the various tenuous clouds of gas and dust that occur in interstellar space. The term was formerly applied to any object outside the solar system that had a diffuse appearance rather than a pointlike image, as in the case of a star.

Some of Hubble’s most popular images have been of beautiful and colourful nebulae. You can explore the vast ESA/Hubble archive of hundreds of nebula images here.