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.
Gravitational waves were directly observed for the first time in 2015.
重力波天文学は新しい観測手段を提供する。
Gravitational-wave astronomy provides a new means of observation.
Compound of 重力 (gravity) and 波 (wave). A calque from English 'gravitational wave' or 'gravity wave'.