IPA: //ˈspeɪsˌflaɪt//
KK: /ˈspeɪsˌflaɪt/
The act of traveling into or through outer space, typically using a spacecraft.
The astronauts prepared for their spaceflight to the International Space Station.
Spaceflight is formed from "space" (from Latin *spatium*, meaning a continuous area or expanse) and "flight" (from Old English *flyht*, meaning the act of flying). The term refers to the act of flying or traveling through the expanse of outer space.
Think of 'space' as a vast area and 'flight' as the act of flying — together, they describe traveling through the vastness of outer space.