For a gravitational wave to be unambiguously identified, it must be detected by more than one instrument. 鑒於重力波顯而易見的研究地位，必須投入更多的儀器來進行研究。
If a wave passes between you and a pulsar, it will alternately stretch and compress the distance between pulses, so the blinking will appear to slow down and speed up. 脈衝星這種恆星會發出像原子鐘般規律的閃光，要是重力波從你和脈衝星之間穿過，它便會交互拉長和壓縮脈衝及脈衝之間的空間，閃光於是跟著減速和加速。
That is why gravitational waves are so difficult to detect! 這就是為什麼引力波的探測如此困難的原因。
These spacetime distortions travel as gravitational waves. 這些時空的改變以引力波的形式傳遞。
