Being a scientist is like being an explorer. You have this immense curiosity, this stubbornness, this resolute will that you will go forward no matter what other people say.

I don't think discovery of a new planet has a huge meaning for children now, but what it means is the world they're growing up in is very different from children of previous generations. We had Star Trek, Star Wars and Futurama - and we still do - but for children today, they will grow up in a world where other stars were known.

We stand on a great threshold in the human history of space exploration. If life is prevalent in our neighborhood of the galaxy, it is within our resources and technological reach to be the first generation in human history to finally cross this threshold, and to learn if there is life of any kind beyond Earth.