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    Black Hole - It Is What It Ate - HD

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    Michael500ca

    by Michael500ca

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    How fast a super-massive black hole spins may indicate what it fed on and how often. NASA’s NuSTAR X-Ray Telescope is helping to decode the early life story of a nearby active galaxy by timing its rotation and measuring its glow.

    Credit: SPACE.com / Guido Risaliti & Christopher Reynolds, Joint Space Inst. UM / Images: NASA / JPL / ESO