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A nebula (Latin for 'cloud, ... Most nebulae can be described as diffuse nebulae, which means that they are extended and contain no well-defined boundaries. [24]
Planetary nebulae, represented here by the Ring Nebula, are examples of emission nebulae. An emission nebula is a nebula formed of ionized gases that emit light of various wavelengths. The most common source of ionization is high-energy ultraviolet photons emitted from a nearby hot star .
This 25,000-light-year-wide galaxy contains over 10,000 million stars. [1] All coordinates given are for Epoch J2000.0. NGC 1566 is an intermediate spiral galaxy. [6] N 180B is an emission nebula located in the Large Magellanic Cloud. NGC 1566 (RA 04h 20m 00s Dec-56° 56.3′) is a face-on spiral galaxy. It gives its name to the NGC 1566 Group ...
This image of the Carina nebula shows only dust, ionized gases, and stars. Here are some puzzles and brainteasers to challenge your family and friends with, either in person or over video chat.
The following articles contain lists of nebulae: List of dark nebulae; List of diffuse nebulae; List of largest nebulae; List of planetary nebulae; List of protoplanetary nebulae; List of supernova remnants
The Eagle Nebula is part of a diffuse emission nebula, or H II region, which is catalogued as IC 4703. This region of active current star formation is about 5700 light-years distant. A spire of gas that can be seen coming off the nebula in the northeastern part is approximately 9.5 light-years or about 90 trillion kilometers long.
Category: Nebulae. 71 languages ... It should directly contain very few, if any, pages and should mainly contain subcategories. Subcategories. This category has the ...
A typical planetary nebula is roughly one light year across, and consists of extremely rarefied gas, with a density generally from 100 to 10,000 particles per cm 3. [40] (The Earth's atmosphere, by comparison, contains 2.5 × 10 19 particles per cm 3.) Young planetary nebulae have the highest densities, sometimes as high as 10 6 particles per ...