There are countless space activities that would be no less exciting than the moon missions were, I have no doubt. The search for life on Mars, for example.

Here's what I'm wondering: if, digitally, you can remove red-eye, smooth over wrinkles, make people look thinner, then why don't we have the technology to make me sing better?

We went to the moon and discovered Earth.

I believe that the manned space program can engage the public by advancing the space frontier. Every next mission takes you farther out in space than you were before, either technologically or in terms of distance.

I don't require that the main guest [of StarTalk] have any science knowledge or background at all. It's just, I have a conversation with them, it's long and winding, and we find out what parts of what we learn about the person lend themselves to further scientific discussion with an expert who is brought into the studio. So that's how that comes together.

If humans one day become extinct from a catastrophic collision, there would be no greater tragedy in the history of life in the universe. Not because we lacked the brain power to protect ourselves but because we lacked the foresight. The dominant species that replaces us in post-apocalyptic Earth just might wonder, as they gaze upon our mounted skeletons in their natural history museums, why large headed Homo sapiens fared no better than the proverbially peabrained dinosaurs.

What are you doing? Why are you concerning yourself with the meaning of meaning?