Scientists say that something mysterious punched gigantic, cosmic “bullet holes” in parts of the Milky Way.

There’s a string of holes in a long stream of stars called GD-1 that suggests that some yet-undiscovered thing blasted its way through, according to research presented to the American Physical Society last month and first reported by Live Science.

Harvard-Smithsonian astrophysicist Ana Bonaca, the scientist who discovered the cosmic crime scene, suspects that the gigantic “bullet holes” may have been carved out by invisible dark matter.

Unfortunately, the culprit of this celestial shooting seems to have gotten away with it — Bonaca told Live Science that there’s no evidence at the crime scene beyond the size of the gaps in the stellar stream.

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