If I'm looking fit and I'm not, then I'm cheating.

For me, one of the most fertile consequences of the space program is the extent to which it stimulates people to innovate because they want to create a different tomorrow than what they're living in today. And it's that culture of innovation that spawns entirely new economies.

WhenIWasYourAge: People were never "living with their disease." We cured them. Or they died from it.

One of the things that fascinates me most is when people are so charmed by the universe that it becomes part of their artistic output.

Like no other science, astrophysics cross-pollinate s the expertise of chemists, biologists, geologists and physicists, all to discover the past, present, and future of the cosmos-and our humble place within it.

Do you realize that if you fall into a black hole, you will see the entire future of the Universe unfold in front of you in a matter of moments and you will emerge into another space-time created by the singularity of the black hole you just fell into?

For your own safety, do not ever tell an astrophysicist, I hope all your stars are twinkling.