Tag Archives | relativity

ngc1365a

Supermassive black hole spins super-fast

Imagine a sphere more than 2 million miles across spinning so fast that its surface is traveling at nearly the speed of light. Such an object exists: the supermassive black hole at the center of the spiral galaxy NGC 1365. Astronomers measured its astonishing spin-rate using data from the Nuclear Spectroscopic Telescope Array (NuSTAR) and […]

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