Gravitational waves — ripples in the fabric of space time first predicted by Einstein more than a century ago are one of astronomy's hottest topics ever since their first direct detection in 2015.

引力波——一个多世纪前由爱因斯坦首次预言的时空结构中的涟漪，自 2015 年首次被直接探测到以来，一直是天文学最热门的话题之一。