- Astronomie - Les Galaxies - Documentaire ( 17 )
Une galaxie est un assemblage d'étoiles, de gaz, de poussières et de matière noire, contenant parfois un trou noir supermassif en son centre. Notre galaxies à nous s'appelle la voie lactée.
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- 2. http://upsetapex9505.sosblogs.com/The-first-blog-b1/Should-Healthcare-doctors-Market-Height-Inserts-On-Television-b1-p8.htm Le 07/05/2017
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