The vision of Mars colonization is moving from science fiction into real-world planning, with multiple space agencies preparing for long-term human presence. Modern Mars missions focus on testing ...

There are substantial technical, political, and financial obstacles to starting the colonization of Mars within the next few decades. SpaceX is farther along than most toward this ambitious goal.

NASA and Elon Musk are racing toward the same destination, but they are not running the same race. While SpaceX talks in terms of the next launch window, NASA is quietly building a layered campaign of ...