Four Pin Friday

Nebulae:  A visible, thinly spread cloud of interstellar gas and dust. 

 Some nebulae are the remnants of a supernova explosion, others are gravity-induced condensations of the gases in the interstellar medium which in certain cases may become a site for the formation of new stars. 

 The term was formerly used of any hazy, seemingly cloudlike object, including what are now recognized as other galaxies beyond the Milky Way; it is restricted now to actual clouds of gas and dust within our own galaxy. 

 Nebulae are generally classified as bright or dark. Among the bright nebulae are cold clouds that reflect light from nearby stars (reflection nebulae) and hot, ionized clouds that glow with their own light (emission nebulae). 

 Dark nebulae are cold clouds that absorb the passing light from background stars and are called absorption nebulae.

Thank you Pinterest.  Your photos have led me to another "word of the day" and further knowledge into the world of and meaning of nebula (nebulae).  What beauty there is in our solar system!!