Being the first astronaut to visit Mars would be by far the coolest job ever.
A team at Imperial College have come up with a plan to send a team to Mars and back. But there are lots of problems to consider. Astronauts are at risk from bone-wasting, cancer and even death from the nine-month outward trip alone.
The Imperial team say they've found solutions to many of these issues using existing technology. Even so, I don't think I'll be signing up if the mission ever gets off the ground.