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.

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.

As someone who flew two space capsules and twice landed in the ocean, I can attest from personal experience how much logistics work is needed to get you home.

A space program that truly goes somewhere! With his deeds, not only words, President Obama has revitalized our struggling space program.

It was challenging to understand what was necessary to successfully carry out all the training simulations that we, as crewmen, would experience, and make a very successful use of that training and education.

Space tourism is a logical outgrowth of the adventure tourist market.

The much-hyped Ares 1-X was much ado about nothing.