지구 대기권 밖의 우주 공간을 비행하거나 여행하는 일.
The action or process of flying through outer space, either by humans or by robotic spacecraft.
예문:
"The agency is developing new technologies to reduce the cost of orbital spaceflight."
"Long-duration spaceflight poses significant challenges to the human cardiovascular system."
"Advancements in propulsion systems have paved the way for deep-space spaceflight."