noun
gravitational wave; gravity wave
Physics term for ripples in spacetime caused by accelerating massive objects. In English, 'gravity wave' is sometimes used but 'gravitational wave' is more precise.
2015年に初めて重力波が直接観測された。
Gravitational waves were directly observed for the first time in 2015.
重力波天文学は新しい観
Gravitational-wave astronomy provides a new means of observation.