Sep 30, 2011 4:00 AM GMT
During a speech at the National Press Club today, SpaceX founder, Chief Executive Officer and Chief Technology Officer Elon Musk made what he called an "exciting" announcement - SpaceX will develop a fully reusable space transportation system.
Perhaps more exciting, and a bit surprising in that venue, was his extended discussion of why humanity should become a multi-planet species. Since Mars is the closest comparatively habitable planet, that's where he wants to send people.
But the first step is lowering the cost of launch, and that means reusable rockets, he said. In an animation posted on the SpaceX website (click on the illustration), both stages of the two-stage rocket return to Earth and make a soft landing after completing their tasks of delivering the Dragon capsule to orbit. Dragon is shown docking with the International Space Station (ISS), then undocks and returns to Earth also making a soft landing (similar to how Russia's Soyuz spacecraft lands).
His passion, though, is clearly what he believes low cost launch will enable - "a self sustaining human population" on Mars. He stressed that to him a "little base" of people is "not interesting." He wants large numbers of people to move there permanently. He views it as "life insurance" for our species in the event of a human-made or natural catastrophe.
How much should be spent on this kind of life insurance, he asked? About one quarter of one percent of GDP is about right in his view.
As for those who want to move to Mars, Musk suggested a ticket price of $500,000 per person. By the time such a possibility is available, he forecast there would be 8 billion people on the planet (there are almost 7 billion now) and if only "one in a million" could afford the price and wanted to go, that would be 8,000 people right there.