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/u/JeffHoffman on I am Jeff Hoffman, MIT Professor of Aerospace Engineering and former NASA Astronaut. Ask Me Anything!

19 Feb 2015, 19:10 UTC
/u/JeffHoffman on I am Jeff Hoffman, MIT Professor of Aerospace Engineering and former NASA Astronaut. Ask Me Anything!
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My biggest concern with SLS is not technical. The people who are designing and building it know what they are doing, and I have confidence that it will work. What I am most concerned about is that there is serious doubt about how often we will be able to fly it because of the cost. A critical factor for a system that can support real deep space exploration is that we have to be able to fly it with sufficient frequency. Once every two or three years is not enough.

My biggest concern with SLS is not technical. The people who are designing and building it know what they are doing, and I have confidence that it will work. What I am most concerned about is that there is serious doubt about how often we will be able to fly it because of the cost. A critical factor for a system that can support real deep space exploration is that we have to be able to fly it with sufficient frequency. Once every two or three years is not enough.

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