Science is not, despite how it is often portrayed, about absolute truths. It is about developing an understanding of the world, making predictions, and then testing these predictions.

I think a scientist's job is to explore the Universe, to explore the cosmos around us. People always want to know - why is that useful? Well, on just pure fundamental grounds, on some level it's like art, it's like umm, music, it's aesthetics, it's like philosophy. You want to know where you are in the Universe.

I don't even really know what the big bang is, and so when people want to go through and say, 'Well, I believe that the universe started by God starting it,' that's fine by me.

I am an astronomer, and my job is to look to the heavens to better understand the universe and our place in it.

My deep emotional connection to my mother, a remarkable woman who made a hard choice to save her children, and who valiantly struggled to care for us as a single parent, is the current that has driven my entire life. Everything I've accomplished is a testament to her fortitude.

The joy of doing the TV or something like 'Sacrifice' isn't really the process of doing it; the joy is going through this real-life experience.

As an actor, you get to sort of bounce back and forth in terms of the age range you play and the life experience that your characters have.

Women now have choices. They can be married, not married, have a job, not have a job, be married with children, unmarried with children. Men have the same choice we've always had: work, or prison.