Astronauts on Mars: New Book Shows What It Will Take to Get There

Sending people to Mars won't be easy, but the journey isn't entirely out of reach. A new book published by National Geographic explains how the human race can conquer the challenges of getting to Mars and thriving on the Red Planet, blurring the lines between science fiction and reality. In the new work, "Mars: Our Future on the Red Planet," award-winning journalist (and Space.com contributor) Leonard David takes readers on a journey to the future to show what it would take for people to travel to Mars and not just survive, but also prosper in the new world.