Bonsoir,
ça commence à faire les titres de la presse,
je vous propose l'article de Futura Sciences :
http://www.futura-sciences.com/fr/news/ ... oir_32766/
Un avion à Mach 20 ce soir
#2
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There are three simple rules for making a smooth landing: Unfortunately, no one knows what they are.
There are three simple rules for making a smooth landing: Unfortunately, no one knows what they are.