Found this on my travels. Looks like a combination of Homeworld and Masters of Orion!
http://www.sinsofasolarempire.com/
Edit
Just found some videos of it on gamespot
http://uk.gamespot.com/pc/strategy/sinsofasolarempire/index.html?tag=tabs;summary
http://www.sinsofasolarempire.com/
Edit
Just found some videos of it on gamespot
http://uk.gamespot.com/pc/strategy/sinsofasolarempire/index.html?tag=tabs;summary