For more than a decade, physicists in the United States have been chasing what came to be known as a “ghost particle” — the sterile neutrino. It was a hypothetical addition to the Standard Model of ...

At the heart of every atomic nucleus, the strong interaction quietly dictates the structure of matter, yet for decades one of its simplest products refused to fit the script. The way fragile “light ...

NASA’s Hubble Space Telescope got a rare look at the aftermath of two cosmic collisions — and helped scientists solve a decades-old mystery. Many years ago, scientists saw a dense, bright spot near a ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Marguerita is a Certified Financial Planner (CFP), Chartered Retirement Planning Counselor ...

Scientists in China have performed an experiment first proposed by Albert Einstein almost a century ago when he sought to disprove the quantum mechanical principle of complementarity put forth by ...