"In space, you need to exercise your heart since it's not pumping blood around at the same rate." — Mae Jemison

When you have teachers saying, 'I don't have enough time for hands-on activities,' we need to rethink the way we do education.

I wanted to be a professional dancer for a period of time, and I did a lot of dancing and choreography and got paid for it.

I stayed in the astronaut program until 1993. People ask me why I left. I thought I had a lot of things to contribute that would be difficult to do if I stayed. I thought I could have a stronger voice as an advocate for space exploration. So I ended up starting my own technology consulting company.

You have to actually be weighted to something to do the moonwalk, you know.