Protoplanetary-disk.jpg
Description Protoplanetary-disk.jpg |
Artist's concept of a protoplanetary disk , where particles of dust and grit collide and accrete forming planets or asteroids
العربية:
تصور للقرص الكوكبي الأولي
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Source | NASA; http://origins.jpl.nasa.gov/stars-planets/ra4.html | ||||||||||||||||
Author |
NASA,
creator QS:P170,Q63198674
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Permission
( Reusing this file ) |
NASA material is within the public domain if not otherwise noted | ||||||||||||||||
Other versions |
Derivative works of this file: Protoplanetary-disk2.jpg Image:Protoplanetary disk.jpg , version with asteroid artifacts |
Public domain Public domain false false |
This file is in the public domain in the United States because it was solely created by NASA . NASA copyright policy states that "NASA material is not protected by copyright unless noted ". (See Template:PD-USGov , NASA copyright policy page or JPL Image Use Policy .) | ||
Warnings:
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