Elon Musk's plans to colonise Mars may sound far-fetched, but he has already achieved most of what he set to do. But in order to make science fiction a reality, we need to make sure companies are rewarded for taking risks in space

SpaceX officially revealed its plans to go public, which would catapult Elon Musk's already world-leading wealth to even greater heights.

Elon Musk's plans to colonise Mars may sound far-fetched, but he has already achieved most of what he set to do. But in order to make science fiction a reality, we need to make…