At The Edge Of A Large Molecular Cloud In Monoceros , Some 3 , 000 Light Years A ...
Stockphoto ID: 694112
File name: redrosedust_wright_f-LOW.jpg
Format: digital, 3000+ pixels longest side
Property release: no Model release: no
Source: photo agency Based in: United States
Description: At the edge of a large molecular cloud in Monoceros , some 3 , 000 light years away , dark filaments of dust are silhouetted by luminous hydrogen gas The close up view of the Rosette Nebula dramatically suggests that star formation is an on going process in the region , with dark filaments sculpted by winds and radiation from hot , young stars Ultraviolet radiation from the young stars also strips electrons from the surrounding hydrogen atoms As electrons and atoms recombine they emit longer wavelength , lower energy light in a well known characteristic pattern of bright spectral lines At visible wavelengths , the strongest emission line in this pattern is in the red part of the spectrum and is known as " Hydrogen alpha " or just H alpha Part of IPHAS , a survey of H alpha emission in our Milky Way Galaxy , this image spans about 25 light years
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