Steve Sclafani, a graduate student working with Dr. Kurahashi Neilson at Drexel who is now a postdoctoral researcher at the University of Maryland, and Mirco Hünnefeld, a graduate student at the Technical University Dortmund in Germany, spearheaded the analysis, taking advantage of advances in machine learning, a branch of artificial intelligence.

“We’re really doing a needle-in-the-haystack search,” Mr. Hünnefeld said.

To avoid the possibility of deceiving themselves, the analysis of 10 years of IceCube data was performed blind. The researchers did not look at any of the intermediate results, and the scientists did not know until the end whether their analysis had turned up any Milky Way neutrinos at all. “It was fully possible that we opened up that box and we saw zero,” Dr. Sclafani said.

Instead, the analysis turned up hundreds of neutrinos that came from the galactic plane of the Milky Way. There appears to be some correlation between neutrinos and gamma rays, the highest energy form of light. Both are created in the cascade of particles that spill out when high-energy cosmic rays slam into other particles like hydrogen gas molecules in interstellar space.

There is a suggestive bright spot near the galactic center — perhaps neutrinos generated by the Milky Way’s supermassive black hole — but “it’s not as statistically significant,” Dr. Kurahashi Neilson said. As more data is collected, neutrino emissions from the center of the galaxy will become distinct — or it will fade because it was just a statistical fluke.

The showering of cosmic rays, gamma rays and neutrinos on Earth shows the universe is anything but calm, with exploding stars, and black holes swallowing their surroundings.

“We’re seeing all of these incredibly violent and energetic processes,” said Regina M. Caputo, an astrophysicist at NASA’s Goddard Space Flight Center in Maryland who was not involved with the IceCube project.

Elizabeth A. Hays, the project scientist for NASA’s Fermi Gamma-Ray Space Telescope, said IceCube will provide a new and different view. “Now that we also have the neutrinos,” she said, “we can look at those things together to really understand where is energetic matter coming from, in our galaxy and beyond it.”