Alien civilizations, cosmic signals, and megastructures drive this deep search for intelligent life beyond Earth. The video ...

Humans have created countless inventions that shape our lives in amazing ways. Some are practical, some are revolutionary, and some are simply fascinating. But if aliens suddenly appeared, which ...

Harvard astrophysicist Avi Loeb has said that he explored the newly-released Pentagon UFO files, arguing that while most cases likely have conventional explanations, a small number of anomalies remain ...