收藏 Collections from websites

IC 1396: Emission Nebula in Cepheus

Stunning emission nebula IC 1396 mixes glowing cosmic gas and dark dust clouds in the high and far off constellation of Cepheus. Energized by the bright central star seen here, this star forming region sprawls across hundreds of light-years, spanning over three degrees on the sky while nearly 3,000 light-years from planet Earth. Among the intriguing dark shapes within IC 1396, the winding Elephant's Trunk nebula lies just below center. Stars could still be forming inside the dark shapes by gravitational collapse. But as the denser clouds are eroded away by powerful stellar winds and radiation, any forming stars will ultimately be cutoff from the reservoir of star stuff. The gorgeous color view is a composition of image data from narrowband filters, mapping emission from the nebu la's atomic oxygen, hydrogen, and sulfur into blue, green, and red hues.

 

July 20, 2017

via NASA

Get a beautiful photo from NASA delivered to your email every day

猜您喜欢

This entry was posted on Thursday, July 20th, 2017 at 10:17 am and is filed under 科学. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.




Add Comment

Leave a Reply

Comment Rules

  • Example Rule 1
  • Comment rule 2
  • 3. Bold Rule
  • more...

Copyright ©2017 收藏.
%d bloggers like this: