I think both the space shuttle program and the International Space Station program have not really lived up to their expectations.

This is the LM pilot. I'd like to take this opportunity to ask every person listening in, whoever and wherever they may be, to pause for a moment and contemplate the events of the past few hours and to give thanks in his or her own way.

I am excited to think that the development of commercial capabilities to send humans into low Earth orbit will likely result in so many more Earthlings being able to experience the transformative power of space flight.

I don't think we're going to build a 50-person spacecraft or a 100-person spacecraft.

Unfortunately, kids are led to believe things are easier to achieve than they really are.

Kids, help your parents if they don't know how to use a smartphone.

Mars has been flown by, orbited, smacked into, radar examined, and rocketed onto, as well as bounced upon, rolled over, shoveled, drilled into, baked and even blasted. Still to come: Mars being stepped on.