Billal Bensalah


Evening astronomical
On the anniversary of Yuri Gagarin, first man in space on 12 April 2012, Science Club of Guerrara in Algeria, presented this evening astronomical about this great achievement in human history
And presenting the most important developments in astronomy with the astronomical observation of the moon, Saturn and Mars.

Presentation: (billal ben salah)


Observation: (Med Aissa Moussa)

thank you for all.


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