Curiosity is the essence of human existence and exploration has been part of humankind for a long time. The exploration of space, like the exploration of life, if you will, is a risk. We've got to be willing to take it.

Curiosity is the essence of human existence. 'Who are we? Where are we? Where do we come from? Where are we going?'... I don't know. I don't have any answers to those questions. I don't know what's over there around the corner. But I want to find out.

Today, we are on a path of decay. We are seeing the book close on five decades of accomplishment as the leader in human space exploration.

After Apollo 17, America stopped looking towards the next horizon. The United States had become a space-faring nation, but threw it away. We have sacrificed space exploration for space exploitation, which is interesting but scarcely visionary.

Curiosity is the essence of human existence. 'Who are we? Where are we? Where do we come from? Where are we going?'... I don't know. I don't have any answers to those questions. I don't know what's over there around the corner. But I want to find out.

That is the exploration that awaits you! Not mapping stars and studying nebula, but charting the unknown possibilities of existence