Bullet holes

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

There's a string of holes called GD-1 that suggests that some-undiscovered thing has blasted its way through, according to research published in the American Physical Society last month. Harvard-Smithsonian astrophysicist Ana Bonaca, the scientist who discovered the cosmic crime scene, suspects the gigantic "bullet holes" may have been carved out by invisible dark matter.

whodunnit

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.

"We can not map [the impactor] to any luminous object that we have observed, "Bonaca told Live Science, "It's much more massive than a star … Something like a million times the mass of the Sun. So there are just no stars of that mass. We can rule that out. And if it were a black hole, it would be a supermassive black hole of the child we find at the center of our own galaxy. "

Dark Hammer

Because there's no evidence of a black hole, Bonaca suspects a ball of dark matter may have crashed through the stars. But it's too early to definitely rule out any possibilities.

"It's a dense bullet of something," Bonaca said.

READ MORE: Something Strange Punched a Hole in the Milky Way. But What Exactly Is It?[[Live Science]

More on dark matter: New Map of Dark Matter Breaks Scientists' Understanding of Physics

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