and i think squyres and the team just epitomizes that.quyres toby we've into the top top of the deal and we took a photograph because it was a cool thing to do. he said, did have scientific value? well, he was willing to say it didn't matter. and even though if you work at how much it might cost, it's a great image. so the willingness to be a person as well as a scientist, i saw throughout. and they think that so we need to realize. you don't lose your rigor by having the poetic aspects and artistic interests spent we are down to the the last few questions, for one of these i'm sure, curious minds very much want to know, the wake up songs for the rovers have been different over the years. wake up songs have included love me like a rock, come fly with me by frank sinatra, wake up little susie, simon and garfunkel version, radar love, by golden earring, the theme from mission impossible, and probably my favorite, where is my mind, by the pixies. so who gets to pick the songs because actually, i'm totally tangentially aware of that and i rec

squyres, we'll start with you. >> all right. senator nelson, thank you very much for the opportunity to appear here today. my name is steve squyres, and my title is gold and smith professor of astrongny at cornell -- astronomy at cornell university. a central focus of the nasa authorization act of 2010 was the development of two crucial and highly-capable elements of a deep space exploration system. the space launch system and the o rye oncrew vehicle. nasa's development of both is well underway, passing successful test firings of sos's cryogenic upper stage and the delivery of the first orion command module to kennedy space center. what will these vehicles be used for? president obama has called for sending humans to an it's royce by 2025. these are grand goals, and they're broadly consistent with the goals that were expressed in the 2010 authorization act. i see two possible areas of concern. one is that a pay as you go approach can result in slow progress if funding lemes are not -- levels are not adequate. none has had a fli

squyres tell us what types of planetary science missions does the unique capability of the space launch system, this new big rocket, that is evolvable in size, what does that provide? >> like dr. kennel i am excited about what we can do with an asteroid. i was recently part of a four member nasa crew. i was the one non-astronaut on the crew that conducted a two-week long mission of the aquarius mission in your home state of florida simulating the kinds of extra vehicular activity tools and equipment for what we use for exploration of an asteroid and it got me very excited about what a human scientist, explorer could do in an asteroid on a mission by sls. i think most importantly a heavy lift capability is essential. i'm a big fan of robotic exploration. i'm a member of the science team for the curiosity mission but with our magnificent curiosity rover can do in a day you can do in about 45 seconds, and you know what our magnificent opportunity rover has done on mars and eight and a half years you could do in a good week, week and a half, something like that. so what humans can do in the

and steven squyres, tell us what kinds of missions does the unique capability of the space launch system, this new big rocket that has -- that is evil bubble in size, what does that provide -- that is evolvable in size. >> i am excited about what we can do. was recently part of a four member nasa crew that conducted a two week long mission in florida. simulating the kinds of tools and equipment that one would use for exploration of an asteroid. it got me very excited about what a human crew, a crew of human scientist explorers could do on a mission that would be enabled by sls. i think most importantly, this is essential for sunday sending humans to mars. i am a big fan of robotic exploration. but what our curiosity rover can do in a day, you can do in about 45 seconds. what our magnificent opportunity roper has done in 8.5 years you could do in a weak, weak and a half. so what humans can do in the way of science on the surface of mars far surpasses what can ever be done, in my view, by these wonderful rovers but i, and so many of us here have devoted our careers to building and operatin