Editor's note: All opinions, columns and letters reflect the views of the individual writer and not necessarily those of the IDS or its staffers. Rovers on Mars have made exciting finds and ...

Why NASA is not racing Musk on colonization Where Elon Musk talks openly about building a city on Mars, NASA has been careful to draw a line between exploration and colonization. The agency has long ...

Nasa is developing ways to use nuclear power to send spacecraft to their destinations. Nuclear propulsion could greatly reduce the journey time to Mars, perhaps cutting a voyage of more than six ...