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Gondor and Rohan: How Nanograv Uses Quasars and the Cosmos’ “Mutter” to Find Pairs of Black Holes

Summary by WWWhat's New
Detecting a pair of supermassive black holes about to merge seems like trying to guess, from the sidewalk, if two trucks are spinning around a roundabout miles away. You know that they are there because of the vibrations that come to the ground, but you don’t see the roundabout or the vehicles. In astronomy, that vibration has a name: gravitational waves, wave of space-time that occur when very massive objects accelerate, as it happens in a bina…
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Detecting a pair of supermassive black holes about to merge seems like trying to guess, from the sidewalk, if two trucks are spinning around a roundabout miles away. You know that they are there because of the vibrations that come to the ground, but you don’t see the roundabout or the vehicles. In astronomy, that vibration has a name: gravitational waves, wave of space-time that occur when very massive objects accelerate, as it happens in a bina…

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WWWhat's new broke the news in on Tuesday, February 17, 2026.
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