we don't have the life-support system there so we would have somtodo some sort of life-suppot system on the flight to accommodate that we are doing significant animal research on board and we have all the basic animal models. can you comment on that? and >> i was on the space station for four and a half months and i felt like the exercise protocols we had were sufficient. i came back with no bone loss density. so i think we've gone back and that is the key issue. we still are learning a lot about what can happen in the radiation environment and i think the ability to do some work around the moon while inform us a little bit more about what he don't know and give new line of inquiry to make sure we have the bases covered. >> you have an excited and engaged and interested committee, so keep us in your thoughts and keep us informed. thank you very much and i will yield back. >> now recognizing the gentleman from california. >> thank you very much mr. chairman. it is a jump between various events so i will go back and look at the testimony that we have had so far. i am on the foreign aff