Every galaxy has a supermassive black hole at its center, much like every egg has a yolk. But sometimes, hens lay eggs with two yolks. In a similar way, astrophysicists like us who study supermassive ...
Gravitational waves are ripples in the fabric of spacetime predicted by Albert Einstein’s general theory of relativity, first detected in 2015. But an expected corresponding low-frequency ...
The detection of supermassive black holes orbiting each other could soon move from theory to observation, thanks to a remarkable optical phenomenon. Normally invisible, these cosmic giants could ...
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