Mars gets called the Red Planet so often that people picture a crimson sphere, almost like a hot coal drifting through space and glowing with heat. The real reason is less dramatic and more ...

Elon Musk says he wants to send one million people to Mars by the year 2050. The SpaceX CEO has become famous for making huge promises about colonizing the red planet. But how many of those ideas are ...

— -- Getting a six-wheeled car-size rover safely onto the surface of the red planet? Daunting, sure. But NASA did it with Curiosity. Sending humans on a mission to Mars? That requires overcoming ...