Bill Nelson: “All right. How much will the full upgrade cost, and how long will it take?”

When we find those, by the way, not only looking for life, we start to understand their development, and we better understand who we are, why we are here, how we got here, and all of this evolution of the cosmos.

It will fly supersonic but its design is such a radical design, that instead of pushing the bow wave going through the atmosphere, as you go from subsonic to supersonic, which causes that audible sound that goes 'boom, boom,' it will…

One of the reasons you and I were able to accomplish so much on this committee is both of us worked very hard to keep politics out of NASA and to focus on the core mission of exploration.

What we are going to do is a multi-year test, taking it to different locations all over the United States, and see if the muffled roar is acceptable to the people on the ground.