We're Number One On The Runway.

In Space, You Don't Get That Much Noise. Noise Doesn't Propagate In A Vacuum.

Going To Mars Would Evolve Humankind Into A Two-planet Species.

I Don't Think We're Going To Build A 50-person Spacecraft Or A 100-person Spacecraft.

You Need Propellants To Accelerate Toward Mars, Then To Decelerate At Mars, Again To Re-accelerate From Mars To Earth, And Finally To Decelerate Back At Earth. Accordingly, The Mass Of These Required Propellants, In Short, Drives Our Need For Innovative Launch Vehicles.

I Was Motivated To Improve The U.s. Strategy Of Going Back To The Moon In 1985. That's A Long Time Ago. Going Back To The Moon Would Be A Great Achievement For Tourism Adventure Flights.