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مشاهدة النسخة كاملة : SLS: Nasa's 'megarocket' set to fire up engines in crucial test


BECKHAM
16-01-2021, 04:55 PM
The four main engines for Nasa's new "megarocket" are to be fired in unison for the first time.

for more... (https://www.bbc.co.uk/news/science-environment-54583588)