At Davos, the billionaire said his belief that “it might only be us” in the cosmos drives Tesla, SpaceX, and his vision for humanity’s future. Elon Musk proclaimed he’s an alien during a Thursday ...

Every once in a while, you may look up toward the sun and see strange bright lights on either side of it. Or perhaps you'll be sitting in an aircraft, looking out the window at its shadow, and see a ...