You searched for: “astronautics”
astronautics (pl) (noun) (a plural which is used as singular)
The science and technology of space flight: Astronautics is the traveling beyond the earth's atmosphere, including interplanetary and interstellar areas.
This entry is located in the following units: astro-, astr- (page 5) -ics, -tics [-ac after i] (page 4) naus-, nau-, naut-, -naut, -nautical, -nautics (page 1)