"Gravitational waves are ripples in spacetime caused by some of the most violent and energetic processes in the universe [citation:1]. In 2015, LIGO detected waves from colliding black holes, confirming a century-old prediction [citation:1][citation:14]. Now, using dead stars as cosmic clocks, scientists have measured a low-frequency hum—a chorus of spacetime ripples from countless ancient black hole mergers [citation:4][citation:14]."
This hum is the silent rhythm of the universe, a symphony of gravity played across cosmic time. It might hold answers to the nature of gravity, the formation of the first black holes, and the earliest moments after the Big Bang. As you drift off, picture the silent pulse of spacetime, the gentle rhythm of the cosmos [citation:3][citation:8]. This is the quiet music of the universe, playing forever in the dark.
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