astronautics

[as-truh-naw-tiks, -not-iks]
noun (used with a singular verb)
the science of or technology involved in travel beyond the earth's atmosphere, including interplanetary and interstellar flight.

Origin:
1925–30; see astronautical, -ics

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World English Dictionary
astronautics (ˌæstrəˈnɔːtɪks)
 
n
(functioning as singular) the science and technology of space flight
 
astro'nautic
 
adj
 
astro'nautical
 
adj
 
astro'nautically
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
It will take the astronomical costs out of astronautics.
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