Dark matter is a mysterious material that has eluded scientists for nearly a century. The substance is invisible to telescopes and the human eye, but scientists remain confident in its existence due to its gravitational effects at galactic scales.
Researchers at the Sanford Underground Research Facility in the United States recently described a particle interaction documented during a deep-underground experiment. Physicists say a lone signal from the South Dakota experiment does not fit the profile of any other known particles.
Despite observing these hints of the elusive cosmic component, researchers stopped short of saying they have finally detected it.