The first of four selection rounds ended August 31. Now, the Mars One selection committee will spend the next several months narrowing down the applicants. There are even plans to launch a reality TV show to choose the final candidates. The goal is for 24 to 40 people to begin a seven-year training program in 2015. Then, working with the private space flight company SpaceX, Mars One hopes to send the prospective Martian settlers to the red planet in teams of four, beginning in 2023.