Because of his military service, Dad was buried in Arlington National Cemetery.

I'm in favor of changing the destination of humans. There are a lot of manned missions that can be done, but not in the direction of the moon.

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

There's no doubt that there will be many trials and tribulations along the way in taming space for the benefit of all, unmasking its truths and using the boundless resources available to us. Taking a chance allows us to seek new horizons -- and we all benefit from being horizon hunters.

I suggest that going to Mars means permanence on the planet - a mission by which we are building up a confidence level to become a two-planet species.

Space is not just going up and coming back down again. Space is getting into orbit and being there, living there, establishing a presence, a permanence.

Unfortunately, pioneers will always pave the way with sacrifices.