a) What is more, the entrepreneur developed the Tesla Roadster, the world's first electric sports car.
b) Interestingly, a Martian year is twice as long as an Earth year.
c) Surprisingly, one of the biggest problems facing Musk is how to keep his colonists healthy on the long journey.
d) Unfortunately, if you want to be one of these new space pioneers, you'll have to start saving now.
e) Once a self-sufficient base has been established, a spacecraft will transport up to 80,000 people to live on Mars.
