Marvi Ferry Dakospa

7 Flips | 1 Magazine | 1 Like | 1 Follower | @marviferry | Keep up with Marvi Ferry Dakospa on Flipboard, a place to see the stories, photos, and updates that matter to you. Flipboard creates a personalized magazine full of everything, from world news to life’s great moments. Download Flipboard for free and search for “Marvi Ferry Dakospa”

Sei L'inizio di Tutto, Ti Amo e Ti Penso

Maya Shofa Cherbon

APOD: Planetary Nebula Abell 7 (2013 Dec 05) Image Credit & Copyright: Don Goldman http://apod.nasa.gov/apod/ap131205.html Explanation: Very faint planetary nebula Abell 7 is some 1,800 light-years distant, just south of Orion in planet Earth's skies in the constellation Lepus, The Hare. Surrounded by Milky Way stars and near the line-of-sight to distant background galaxies, its generally simple spherical shape, about 8 light-years in diameter, is outlined in this deep telescopic image. Within its confines are beautiful, more complex details enhanced by the use of narrowband filters. Emission from hydrogen and nitrogen is shown in reddish hues with oxygen emission mapped to a bluish-green color, giving Abell 7 a more natural appearance that would otherwise be much too faint to be appreciated by eye. A planetary nebula represents a very brief final phase in stellar evolution that our own Sun will experience 5 billion years hence, as the nebula's central, once sun-like star shrugs off its outer layers. Abell 7 itself is estimated to be 20,000 years old. Its central star is seen here as a fading white dwarf some 10 billion years old. http://www.astrodonimaging.com/ Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=131205 #APOD

Log In or Sign Up to View

This Facebook post is no longer available. It may have been removed or the privacy settings of the post may have changed.

Periiccela TriyaniNgsih Sicewexsunda