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, …

4 天之前 · Nebulae exist in the space between the stars—also known as interstellar space. The closest known nebula to Earth is called the Helix Nebula. It is the remnant of a dying star—possibly one like the Sun. It is approximately 700 light-years away from Earth.

2025年3月29日 · 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.

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.

2025年3月18日 · This image shows six different, unrelated planetary nebulae, all with similar, bipolar morphologies. These six objects, NGC 6302, NGC 6881, NGC 5189, M2-9, Hen 3-1475, and Hubble 5, are all ...

2023年10月13日 · Space Place in a Snap: What Is a Nebula? 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? Nebulae are far away from Earth.

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.

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.

2024年9月9日 · Nebulae are vast interstellar clouds of gas and dust spanning tens of light-years in space. These cosmic structures consist primarily of hydrogen and helium, with traces of heavier elements and dust particles. Nebulae play a crucial role as stellar nurseries, forming new stars through gravitational collapse of dense regions.