Mars One, the controversial reality TV-funded project to send people on a one-way trip to Mars, has narrowed down its “astronaut selection process” to the last 100 candidates - a tiny number compared to the 200,000 who originally applied.

The 100 that remain will now go through exercises to test how they might function in the small settlement planned for the trip, focusing on their interpersonal skills - important when stranded on the Red Planet with just three other people.

It would be nice if the final four were all billionaires. To read more, click here.