This... is the Planet Travelers.
You get to travel through space in a campaign of epic proportions. The system is, obviously, D&D 3.5.
It will be mostly Play by Post with occasional use of Gametable, one of the many Virtual Tabletops out there.
All information that you need to know can be found right here, at the "main page of its wiki on OP.":http://www.obsidianportal.com/campaign/the-planet-travelers/wikis/main-page