Mark Millis on the possibilities of interstellar travel

Neil Armstrong wants us to go back to the Moon. Buzz Aldrin, his Apollo 11 crewmate, wants us to leapfrog on to Mars. But Dr Marc Millis wants us to go a bit further - a hundred million times further, to be exact. He says the trek to other worlds is arduous but unless we start now to develop a form of technology which lets humans to travel light years in a lifetime, we will be squandering the greatest challenge to humankind yet. The technological windfall to humanity of space travel is hug