Duffy: Absolutely! Leaving the Earth’s gravity well for low earth orbit and beyond is always a challenge but we’ve learned how to do it quite safely. Coming back home is a completely different challenge, and we have a lot to learn about handling the velocities we’ll experience coming back from Mars. The Orion test flight let us see how our materials and technologies handled 84% of the energy we’d experience coming back from the moon. We’ve done that before, of course, but not in 4 decades, and the design was different and the capsule smaller. The data are being evaluated now and will no doubt lead to improvements in design and materials. A return from Mars will require dealing with even more energy, so we have a lot to learn and the test program will help get us there. The Orion and SLS combination is the future of space exploration, and I’m excited to watch it happen and proud to be a part of it.
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Brian Duffy is a retired U.S. Air Force colonel and a former NASA astronaut. He flew aboard four Space Shuttle missions. Selected by NASA in June 1985, Duffy became an astronaut in July 1986. He has logged a total of 40 days, 17 hours, 34 minutes and 59 seconds in space. Duffy was the pilot on STS-45 Atlantis (March 24 to April 2, 1992), and on STS-57 Endeavour (June 21 to July 1, 1993). Duffy next commanded a six-man crew on STS-72 Endeavour (January 11-20, 1996), and a crew of seven on STS-92 Discovery (October 11-24, 2000). He retired from the Air Force and NASA in 2001. Duffy was Vice President of Mission Operations and Support Services for the Lockheed Martin Corporation from 2004 to 2008. He is currently Vice President and JSC Program Manager for Exploration Systems at Orbital ATK.