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Contact: Bob Naeye
NASA/Goddard Space Flight Center

A Black Hole Accreting Matter from a Companion Star

Caption: The nature of ultraluminous X-ray sources remains controversial, but many astronomers think that some or most of these objects consist of an intermediate-mass black hole that accretes matter from a companion star. Recent evidence suggests that a ULX in the galaxy NGC 5408 has a black hole with about 2,000 solar masses.

Credit: NASA

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