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美国雷射干涉重力波天文台（LIGO）与设于意大利的欧洲引力天文台（Virgo）周四（2日）表示，可能首次探测到黑洞与中子星碰撞产生的引力波信号。

两地天文台在上月26日，同时探测到有关信号，并推测信号由约12亿光年外的黑洞和中子星碰撞产生。LIGO发言人布雷迪说，探测到的信号非常微弱，就像在喧闹的咖啡馆中听他人耳语，很难辨别清楚，因此还需要一段时间才能得出确切结论。今次是两间机构首次在捕捉到引力波后，未确定其来源就对外公布。

引力波是由黑洞、中子星等碰撞产生的一种时空涟漪，宛如石头丢进水里产生的波纹。LIGO执行主任赖茨说，如果证实引力波是黑洞吞噬中子星的迹象，将是“三连胜”，意味科学家观察到双黑洞、双中子星以及黑洞与中子星碰撞的3个不同情况。最新的发现，有助研究组成中子星的超稠密物质，以及宇宙膨胀的速度。

自2015年首次探测到引力波以来，两家机构已探测到13次由双黑洞碰撞产生的引力波，两次由双中子星碰撞产生的引力波。LIGO和Virgo近期又升级探测器，于4月1日启动第3轮引力波探测。