You cannot study other planets without referring to Earth and without applying the techniques and the insights of Earth science. And you cannot really do a good job understanding the Earth without the insights from planetary exploration.

When you think about alien intelligences making art, you then have to think about what art is and how bound up it is in the nature of consciousness. Why do we make art? And what can we expect to have in common with other creatures in universe?

Among the radio astronomers of SETI - the Search for Extraterrestrial Intelligence - it's only sort-of a joke that the true hallmark of intelligent life is the creation of radio astronomy.

Why should we consider defining intelligence as something global and as something that hasn't actually yet appeared on Earth? It may be useful for envisioning the future of our own civilization and any others that may be out there among the stars. It might give us something to strive for.

We're going to be focusing our science on things that will take us farther and longer into space. For many of those experiments, the crew members are human guinea pigs, which is fine; that's part of my job. I don't mind being a human guinea pig.

In particular, the emerging call from our nation's evangelicals to protect God's creation is substantial.

Most modern science fiction went to school on 'Dune.' Even 'Harry Potter' with its 'boy protagonist who has not yet grown into his destiny' shares a common theme. When I read it for the first time, I felt like I had learned another language, mastered a new culture, adopted a new religion.

Politics are for foreigners with their endless wrongs and paltry rights. Politics are a lousy way to get things done. Politics are, like God's infinite mercy, a last resort.