The program helps provide patients with "empathy, clarity on the changes they want, acceptance of the limits they set and support for doing what they think they can accomplish successfully, " Mr. Kemper says.

WSJ: Motivational Interviewing: Tool for Smoking Cessation, Weight Loss and Chronic Disease Management

There will also be an additional 10 "safety and acceptance" firings that will explore some of the rocket's limits, to certify the system for use in a manned vehicle.

BBC: Science & Environment