Everyone loves a good alien invasion story, preferably one with city-sized ships and physics-defying tech. There's just one big problem with that. The Milky Way is estimated to contain 100 to 400 ...

A NASA expert suggests aliens are real, but their technology isn't 'super-science'. Find out the chilling reason their signals fail to reach us and why we are effectively alone in a crowded galaxy.

In 1950, famed astrophysicist Enrico Fermi posed a profound question during a casual lunch with colleagues: Where is everybody? In other words, if there’s an extremely high probability that advanced ...