These 80 space trivia questions are great to play with friends, challenge your family with or play by yourself. See how much you really know about the universe, below. Related: What a Wonderful ...

From ancient philosophers pondering the stars to modern scientists scanning distant exoplanets, humanity has long asked one haunting question: Are we alone? When you purchase through links on our site ...

Every week, Space.com delivers the latest discoveries, launches, and cosmic curiosities from across the universe. From ...