Before I came here I was confused about this subject. Having listened to your lecture I am still confused. But on a higher level.
Clearly, some creative thinking is badly needed if humans are to have a future beyond Earth. Returning to the Moon may be worthy and attainable, but it fails to capture the public's imagination. What does get people excited is the prospect of a mission to Mars.
The travel, the amazing work I have had the chance to do, the meetings with different people are all very inspiring and give me lots of positive energy.