A spacecraft shot stunning photographs of Earth from nearly one million miles away on its route to a pulverized asteroid. The ...

Elon Musk thinks humankind's only safety valve is to move multitudes to Mars. He has no idea how foolhardy and dangerous that ...

NASA has launched the Europa Clipper spacecraft, which will investigate whether the Jovian moon has conditions that support ...

As you may recall from a recent column, the final fate of Earth depends on the last stages of the sun’s life, its red-giant ...