Dark Galaxy http://www.darkgalaxy.com
Dark Galaxy is a game of planet management, ship battles and the struggle for control of resources (planets) in the universe. Planets must be developed with resource generating structures and ship and weapons factorys to produce fleets. Better resource producing structures and ships can be researched by training scientists on your worlds.
Dark Galaxy is turn based with each turn lasting an hour, every hour the DG server updates everyones score and resource totals and also calculates the results of any battle that are taking place.