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1月14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（源自拉丁文的：nebulae、nebulæ或nebulas，意思就是“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 ] 。

星云（Nebula），是稀薄的气体或尘埃构成的天体之一。 包含了除行星和 彗星 外的几乎所有延展型天体。 它们的主要成分是氢，其次是 氦，还含有一定比例的 金属元素 和 非金属元素。 1990年 哈勃望远镜 升空以来的研究还发现含有 有机分子 等物质。 [1] 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 …

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 and dust in space. Nebulae can serve as stellar nurseries where new stars are born or as the remnants of stars that have exploded as supernovae. These colorful clouds play a ...

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.

2024年7月27日 · These fantastical shapes, some of the universe’s most visually stunning constructions, are nebulae, clouds of gas and dust that can be the birthplace of stars, the scene of their demise – and sometimes both. Nebulae are made up of gas – primarily hydrogen and helium – and fine cosmic dust.

2021年8月23日 · Nebulae are giant clouds of gas and dust in space. They’re commonly associated with two parts of the life cycle of stars: First, they can be nurseries forming new baby stars. Second, expanding clouds of gas and dust can mark where stars have died.

Nebulae News & Articles See All News. Article. 6 Min Read. NASA’s Chandra, Hubble Tune Into ‘Flame-Throwing’ Guitar Nebula. Article. 5 Min Read. Cassiopeia A, Then the Cosmos: 25 Years of Chandra X-ray Science. Article. 4 Min Read. 25 Images to …

2023年10月13日 · Nebulae are far away from Earth. We know what they look like because scientists use powerful telescopes to capture images of them. A nebula can take many different forms and shapes, but where did these stunning dust clouds come from?