Ultimately, what we're looking for in the long run is to find other Earth-like planets.

The universe has told us the most common types of planets are small planets, and our study shows these are exactly the ones that are most likely to be orbiting Alpha Centauri A and B.

I hope that vigorous space exploration continues and that humankind will have a space station that resides between Earth and the moon. Outside the gravitational field of Earth, we could launch robotic spacecraft to other destinations in our solar system.

A 'serious' scientist in 1992 or 1993 had to admit the possibility that planets were really rare, that most stars might not have planets. We've gone from there to here - where most stars have planets.

I majored in history and political science at the College of Charleston in South Carolina, and I have always loved researching how a single human being can change the course of history.

How do you create chemistry? If only I knew that! Some people say it's a natural thing that you have with someone, and maybe it is to do with that, but I think you can work on it.

The scientific observer of Nature is a kind of mystic seeker in the act of prayer.

I feel it is now my duty to speak to young women, to encourage them to have careers and, particularly, careers in science.