Discover how the groundbreaking idea of a space elevator is moving from science fiction to reality as leading innovators in Japan and China invest in this futuristic technology. Learn about the ...

Deep space travel has a biology problem. Human bodies are built for a narrow band of temperatures, gravity and radiation, yet ...

Like stretch marks left on skin that expanded too quickly or cracks embedded in freezing ice, cosmic strings are artifacts of what the universe looked like in the moments before it rapidly changed ...

Musk weighed in on all of it at this week’s World Economic Forum. But his predictions rarely work out the way he says they ...