A puzzling ultraviolet light seen across the Milky Way could come from the destruction of nuggets of dark matter, the mysterious stuff that makes up around a quarter of the matter and energy in the universe.
The light could originate with a type of dark matter called axion quark nuggets, researchers suggest in a paper submitted to arXiv.org. This kind of dark matter — if it exists — would come in both matter and antimatter flavors, providing it a way to make an ultraviolet glow that other dark matter particles can’t manage.
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