SLS: Nasa's 'megarocket' set to fire up engines in crucial test
The four main engines for Nasa's new "megarocket" are to be fired in unison for the first time.
from BBC News - World https://ift.tt/2LTrTeL
https://ift.tt/2LTrTeL
from BBC News - World https://ift.tt/2LTrTeL
https://ift.tt/2LTrTeL
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