Astronauts working for the government will always need to be either pilots or mission specialists. Those who want to be pilots should have military experience - ideally, a test pilot background.

The government needs a role in carrying out exploration. They will be leading the development of the engines that are needed, and the private sector will take advantage of those.

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

Russia perhaps is still entertaining the possibility that the moons of Mars might have access to ice or water.

I grew up in New Jersey and never went up the Statue of Liberty.

Mars is the symbolic and totally stimulating next objective that could so dominate the next century's exploration efforts. From Mars, the resources of all the asteroids will become readily available.

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.