Nebulae
Nebulae Click the icon to view Nebulae of the Messier Catalog The icon shows the Horsehead Nebula (Barnard 33), a dark nebula superimposed on an emission nebula (IC 434). Diffuse Nebulae Diffuse nebulae are clouds of interstellar matter, namely thin but widespread agglomerations of gas and dust. If they are large and massive enough they are frequently places of star formation, thus generating ...
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Dark Nebulae