I am very excited about Nautilus-X.
The PowerPoint is a thing of beauty.
This is the sort of thinking, planning and building that NASA should be doing. This is a proper spaceship!
My friend suggested that we still some way off working out how to overcome the debilitating effects of long term space travel both physically and psychologically.
However, I believe that the centrifuge with artificial gravity will make a big difference. They are hoping to test a version of it on the ISS. With the Mars 500 mission underway in Moscow we are already doing long-term psychological experiments on the type of isolation required for a long range space flight.
I'm just excited that there appears to be some original thinking and planning going on inside NASA.