The best way to study Mars is with two hands, eyes and ears of a geologist, first at a moon orbiting Mars... and then on the surface.

The life expectancy of people going to Mars may be decreased by the higher level of radiation that they receive.

They didn’t tell me I was going into space until after they locked the shuttle doors and started counting down.

From the distance of the moon, Earth was four times the size of a full moon seen from Earth. It was a brilliant jewel in the black velvet sky.

Human rights problems will always exist for years to come, but maybe they'll lessen somewhat.

Heavy lifting doesn't need to be heavy spending if we do the job right.

Training was very extensive, and we dealt with many recoveries from emergencies, and fortunately, participating and observing and existing through the reality of space was a once-in-a-lifetime experience and it was not marred by unexpected hazards or catastrophes.