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Are Primordial Black Holes Really Giant Gravitinos?

Are Primordial Black Holes Really Giant Gravitinos?

Paul M Suter He is an astrophysicist at State University of New York Stony Brook and Flatiron Institute, host Ask an astronaut And the Space Radio, And author How to die in space. He contributed to this article on Space.com Expert Voices: Opinions and Insights.

Astronomers do not understand the origins of the largest of them black holes in the universe. These black holes appear so early in the cosmic record that we might have to summon new physics to explain their appearance.