Mysteries of the Milky Way Galaxy Scientists Still Can’t Explain

Introduction: Home Is the Strangest Place of All We live inside one of the most extraordinary structures in the known universe, and we barely understand it. The Milky Way galaxy is our cosmic home — a vast, spiraling collection of an estimated 200 to 400 billion stars, stretching roughly 100,000 light-years from one edge to…

Strange Signals From Deep Space: Are We Really Alone?

Introduction: Something Is Out There — And It Is Talking On a quiet night in August 1977, a radio telescope at Ohio State University picked up something extraordinary. A signal so unusual, so perfectly structured, that the astronomer reviewing the data circled it on a printout and wrote a single word in the margin: Wow!…