SENSEI searches for light dark matter

Technology proposed 30 years ago to search for dark matter is finally seeing the light. In a project called SENSEI, scientists are using innovative sensors developed over three decades to look for the lightest dark matter particles anyone has ever tried to detect. Dark matter--so named because it doesn't absorb, reflect or emit light--constitutes 27 percent of the universe, but the jury is still out on what it's made of. The primary theoretical suspect for the main component of dark matter is a ...