Nebula - Wikipedia
WEBA 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 hydrogen and also cosmic dust. Nebulae are often star-forming regions, such as in the Pillars of Creation in the Eagle Nebula.
Planetary nebula - Wikipedia
WEBA planetary nebula is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives. [4] The term "planetary nebula" is a misnomer because they are unrelated to planets. The term originates from the planet-like round shape of these nebulae observed by astronomers through ...
How Planetary Nebulae Get Their Shapes - Sky & Telescope
WEBSep 30, 2020 · These fantastic gas-and-dust eruptions from low-mass stars form shapes such as spirals, roses, butterflies, and even cosmic eyes. Now, a team of observers has looked one step earlier in stellar evolution to explain how these shapes come to be.
Hubble's Nebulae - Science@NASA
WEBThese 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.
What is a Nebula? Nebula: Definition, Location and Variants | Space
WEBJun 17, 2024 · Nebulas come in many shapes and sizes and can be further divided into several subcategories including planetary nebulas, supernova remnants, dark nebulas and emission nebulas.
Gallery: Strange Nebula Shapes, What Do You See? - Space.com
WEBJan 9, 2013 · See stunning photos of weird nebulas that have strange shapes. Can you make out their shapes?
Planetary Nebulas - Harvard–Smithsonian Center for Astrophysics
WEBFour planetary nebulas imaged in visible and X-ray light. These beautiful structures consist of gas shed by dying stars. Credit: X-ray: NASA/CXC/RIT/J.Kastner et al.; Optical: NASA/STScI. When a star like our Sun dies, it doesn’t explode into a supernova or collapse into a black hole.
Nebula | Definition, Types, Size, & Facts | Britannica
WEBSep 14, 2024 · Dark nebulae appear as irregularly shaped black patches in the sky and blot out the light of the stars that lie beyond them. Bright nebulae appear as faintly luminous glowing surfaces; they either emit their own light or reflect the light of nearby stars.
Decoding Nebulae - NASA Science
WEBAug 23, 2021 · The nebula, cataloged as NGC 1999, is a reflection nebula, which shines by reflecting light from a nearby star. Unlike emission nebulae, whose reddish glow comes from excited atoms of gas, reflection nebulae have a bluish cast as their interstellar dust grains preferentially reflect blue starlight.
Planetary Nebula - ESA/Hubble
WEBThroughout the years, Hubble has studied and imaged varying shapes and colours of these intricate planetary nebulae, the different colours arising from different, often newly created, chemical elements, showing that the final stages of the lives of …