<ul><li>When two black holes collide, they send out gravitational waves that can be detected on Earth.</li><li>Black hole mergers are typically invisible as they do not emit light visible to telescopes.</li><li>Scientists using Caltech's Zwicky Transient Facility may have observed a possible light signal from a black hole collision.</li><li>The potential light flare was linked to an event detected by gravitational wave detectors in 2019 known as GW190521g.</li></ul>

Black Hole Collision May Have Exploded With Light

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