Gibson writes "A team of 57 engineers at NASA's Marshall Spaceflight center feel that the Ares rocket is not the best solution for launching the new CEV. They are currently working on their own time developing an alternative launch system known as Jupiter. The 131 page proposal, along with other information, is available on the project website. Proponents of the project say that it is 'simpler, safer, and sooner' than the Ares project, predicting the ability for a return to the moon in 2017, two years before the current goal. Ares management has so far dismissed the proposal as a 'napkin drawing.'"