“All galaxies, including our own, are embedded within a vast sphere of black holes each about 30 times the sun’s mass,” says Alexander Kashlinsky, an astrophysicist at NASA’s Goddard Space Flight Center.
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“All galaxies, including our own, are embedded within a vast sphere of black holes each about 30 times the sun’s mass,” says Alexander Kashlinsky, an astrophysicist at NASA’s Goddard Space Flight Center.
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