Should nations fly to the moon together?
As exploring the heavens becomes more expensive, many experts think it is time for nations to band together to push humanity to the next threshold of space exploration.
Ed Weiler was ready for a break. So the top scientist at NASA looked for his friend David Southwood of the European Space Agency (ESA) to join him in a respite from the second day of talks at a meeting about Mars probes, orbital spacecraft, and plucky planetary rovers. It was July in Annapolis, Md. Hot. Sultry. The two men sat on a terrace overlooking the salt-scented seaside town.
Over a Diet Pepsi and coffee, Drs. Weiler and Southwood chatted amiably about their ultimate passion – and one of the holy grails of planetary science: bringing back a rock sample from Mars. But the conversation inevitably got bogged down in the hard reality of arithmetic. Both knew it would take at least $1 billion just to land a spacecraft on the Red Planet.
Then the two men had a eureka moment: Why not have NASA and ESA team up on a venture? Not just one agency putting an instrument on another's spacecraft. An entire set of missions – jointly.
As Weiler put it: "Maybe we ought to be conceiving these things upfront, together."
The result: An announcement this past July of a pioneering agreement between the two agencies to develop a joint Mars exploration program. The effort would begin with missions in 2016 and 2018. It would reach its apex in the 2020s with the first return in the history of the human species of soil and rock samples from another planet.
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