Looking towards the central region of the Milky Way, there is an unexpected surplus in the most powerful light that exists: gamma rays. The source of this gamma-ray excess is uncertain. Two hypotheses have been put forth. One possibility is that dark matter particles collide with each other there and emit gamma rays. Alternatively, known gamma-ray emitters like pulsars or even supermassive black holes might be responsible for it. The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.

Dark matter is a fundamental hypothesis when it comes to our understanding of the universe, but it remains a hypothesis. We have yet to prove its existence, so the alternative hypotheses have had a bit of an edge, since we know that pulsars exist, even though t

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