Mystery deepens after black holes ruled out as universe's missing dark matter

A recent study suggests that none of the universe's dark matter consists of heavy black holes.

According to the University of California, Berkeley, astronomers have been holding onto that hope since the 2015 detection of gravitational waves from colliding black holes.

That dream has now been dashed after statistical re-analysis of supernovas, leaving scientists no closer to solving the problem.

Find out more about the challenge the new discovery poses in the video above.

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