Nebula - Wikipedia
A nebula (Latin for 'cloud, fog'; [1] pl.: nebulae, nebulæ, or nebulas[2][3][4][5]) is a distinct luminescent part of interstellar medium, which can consist of ionized, neutral, or molecular …
What Is a Nebula? | NASA Space Place – NASA Science for Kids
2024年11月8日 · 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 …
What is a Nebula? Nebula: Definition, Location and Variants | Space
2024年6月17日 · A nebula is a giant cloud of gas and dust located in the space between stars. Nebula is Latin for "mist, vapor, fog, smoke, exhalation," but in an astronomical context, it …
Nebula | Definition, Types, Size, & Facts | Britannica
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 …
Decoding Nebulae - NASA Science
2021年8月23日 · After billions more years, our Sun will eventually puff into a huge red giant star before leaving behind a beautiful planetary nebula (so-called because astronomers looking …
Helix Nebula - Wikipedia
The Helix Nebula is an example of a planetary nebula, formed by an intermediate to low-mass star, which sheds its outer layers near the end of its evolution. Gases from the star in the …
Nebula: Definition, Facts, Examples, Types, Difference
2024年9月9日 · Nebula is an interstellar cloud of gas and dust spanning tens of light-years in space. Nebulae consist primarily of hydrogen, helium, and heavier elements, acting as cosmic …
Nebula - Definition, Examples, Types, Facts - Science Notes and …
2024年10月23日 · 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 critical role …
Planetary nebula | Definition, Temperature, Size, & Facts
Planetary nebula, any of a class of bright nebulae that are expanding shells of luminous gas expelled by dying stars. They have a relatively round compact appearance rather than the …
Orion Nebula - Wikipedia
The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way, being south of Orion's Belt in the constellation of Orion, [b] and is known as the …