from BBC News - World https://ift.tt/3lzayFi
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Rival powers jockey for the lead in hypersonic aircraft
The US, China and Russia are pouring money into aircraft that can fly at five times the speed of sound.
from BBC News - World https://ift.tt/3lzayFi
via IFTTT
from BBC News - World https://ift.tt/3lzayFi
via IFTTT
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